Post by: brianforever on July 29, 2004, 04:55:00 AM
Here u r guys A Simple & Straight forward means to playing Xbox Live on ur UDE/UDE2 xbox :)
EASY STEPS TO USING UDE/UDE2 ON XBOX LIVE
1. Have Your Xbox in a Retail State (No Exploit Whatsoever)
2. Setup Your xbox live account & let XBL Upgrade/Update Your Current MS Dashboard & All Your XBL Games from your Collection to the Latest Version Automatically.
3. Install UDE/UDE2 Softmod Exploit. And to be safe always choose a XBL Safe BFM Bios like X2 4980-81 booting Red Led so U know if its on.
4. Boot with a retail game inside the drive (the game has to be in it when you turn on the xbox) and it will bypass UDE/UDE2.
Some Added Info advised From devz3ro Thanks devz3ro :)
"As long as you upgrade your dash to the latest version and all your games with the latest updates, it is possible to go on xbox live without being banned (with an original of course).
I guess for a solution to when a new dashboard is released, create a gamesave exploit that reverts the dashboard back to its original state. Then after the updates are installed, re-install UDE1 / UDE2."
Now you can go into XBL safely from the retail game.
Enjoy Mate, We all did :)
This post has been edited by brianforever: Jul 30 2004, 07:34 AM
Post by: adil786 on July 29, 2004, 05:09:00 AM
all we need now is live! dash access...
Post by: brianforever on July 29, 2004, 06:12:00 AM
| QUOTE (adil786 @ Jul 29 2004, 12:36 PM) |
| nice and simple tut, all we need now is live! dash access... |
Yeah That would be the Icing on the Cake :D
This post has been edited by brianforever: Jul 29 2004, 01:13 PM
Post by: Dai_UK on July 29, 2004, 06:29:00 AM
| QUOTE (brianforever @ Jul 29 2004, 12:22 PM) |
| Well alot of request later... Here u r guys A Simple & Straight forward means to playing Xbox Live on ur UDE/UDE2 xbox  5 EASY STEPS 1. Have Your Xbox in a Retail State (No Exploit Whatsoever) 2. Setup Your xbox live account & let XBL Upgrade Your Current MS Dashboard to the Latest Version Automatically. 3. Install UDE/UDE2 Softmod Exploit. 4. Boot with a retail game inside the drive (the game has to be in it when you turn on the xbox) and it will bypass the ude. 5. Now you can go into XBL safely from the retail game. Enjoy Mate, We all did |
So Are all the posts of
It checks you have your original Hard Disk
It looks for unofficial files on C
etc.
All rubbish and I'm guessing if so from people who went on live with a non M$ bios loaded so got banned because of that ?
Post by: brianforever on July 29, 2004, 07:16:00 AM
| QUOTE (Dai_UK @ Jul 29 2004, 02:32 PM) |
| All rubbish and I'm guessing if so from people who went on live with a non M$ bios loaded so got banned because of that ? |
Dai_UK :)
When u Boot up ur Retail Game the Legit D:/Default.xbe Kicks in, which in return uses the Retail Bios on ur xBox thus bypassing UDE & of course the hacked bios.
It works as a Boot Disc in a way.
Anyway its already Proven to work by everyone whos followed my easy steps :D
This post has been edited by brianforever: Jul 29 2004, 02:28 PM
Post by: mkjones on July 29, 2004, 07:29:00 AM
nice to get the info out there
well done 
I think this would also work with mechfonts or maybe even older ones too. in the past people (like me) developed audio/font code so users only connected to live! with the st.db file in a hacked state, sort of uber parraniod i suppose
Would be nice to use the live dash however, there are similer codes that could be scripted to turn "off" ude but switching it back "on" would be the issue for hotswappers and people without hackable games...
Post by: farbird on July 29, 2004, 08:21:00 AM
Post by: brianforever on July 29, 2004, 08:28:00 AM
Post by: krayzie on July 29, 2004, 08:48:00 AM
Maybe nice to add is that when live tries another update in the future and it fails you will have to uninstall the ude and go live in a retail state and let it update again and then reinstall the UDE. (sounds obvious but I'm sure some people get paranoid after there live game stops working)
Post by: brianforever on July 29, 2004, 09:16:00 AM
| QUOTE (krayzie @ Jul 29 2004, 04:15 PM) |
| yeah nice compact and acurate tut. Guess it was needed cuz many of the people around don't know live was a posibility with ude. Maybe nice to add is that when live tries another update in the future and it fails you will have to uninstall the ude and go live in a retail state and let it update again and then reinstall the UDE. (sounds obvious but I'm sure some people get paranoid after there live game stops working) |
Thanks Mate :D
The Intention was to make it compact & straight to the point
Any other suggestion would be very much Welcomed :)
Btw, havent had any New live Updates yet from the BiG M, except for the XBL Game Update.xbe & download.xbe protocol nothing else that disrupts the Daily operation of UDE/UDE2 :)
But will post on any New outcomes.
Post by: brianforever on July 29, 2004, 01:14:00 PM
Just Wondering If this can be pinned for a while so those who need this can view it
Thanks Much
Post by: adil786 on July 29, 2004, 02:24:00 PM
| QUOTE (brianforever @ Jul 29 2004, 09:17 PM) |
| Hi Moderators Just Wondering If this can be pinned for a while so those who need this can view it Thanks Much |
yeah, pin it or a daily bump, this should stop all the n00b questions about ude with live
Post by: elvato on July 29, 2004, 09:09:00 PM
Post by: krayzie on July 29, 2004, 11:00:00 PM
Post by: fatbastard911 on July 29, 2004, 10:37:00 PM
| QUOTE (elvato @ Jul 30 2004, 03:36 AM) |
| mmm, I have a few questions about it, I know it really a simple steps, but I still don't get it, before anything, I don't have a live account or anything to try it, but in the past font exploits (before UDE), booting with an original game and going live was a sure Ban from M$, so in what differs booting with UDE installed, I thought that when you go live, the live system checked that you don't have any modified file on C, appart from the bios and kernell, and such, so, with UDE installed, the xboxdash.xbe is the update.xbe, and there's a fonts dir renamed o f0nts, etc. so, in what does this differs from the other xploits? (on live! subject, of course) please an explanation would be VERY apreciated.... |
I'll explain very simply. XBL Live isn't affected if the the xbox has already been updated for in the XBL server it checks to see if you have updated the XBL configuration. I'd honestly rephrase everything here; Your loading the default.xbe from the D drive as d:default.xbe which means while playing the XBL game it would not need to load the xboxdash.xbe unless XBL was not updated to your virgin xbox correctly. At most the xbox will need to load xonlinedash.xbe to go through the troubleshooter to find your XBL connection.1) Make sure that if you play Xbl live that you do not chose to update your dash at ANYTIME when playing the xbox original game for the update will kill your xbox files (backups of c: are good for this reason!)
2) Use the New Ude 2, PBL Metoo and whatever bios that corresponds to your Xbox Kernal Version...look it up in the pin section if you do not know...This will allow you to be able to use the newest dashboard version 5659.03.... instead of 4920..... Pal readers follow the instruction in the UDE 2 post about how to change your xbox version to NTSC in order to load UDE 2.
3) Update your virgin xbox with the XBL Live update, then load UDE 2 on to your xbox using NFL Fever's update.xbe or the patch to older existing update.xbe's (aka 4920) Then follow the rest of Brian's tutorial.....above
Post by: devz3ro on July 29, 2004, 10:45:00 PM
| QUOTE (brianforever @ Jul 29 2004, 12:22 PM) |
| Well alot of request later... Here u r guys A Simple & Straight forward means to playing Xbox Live on ur UDE/UDE2 xbox EASY STEPS TO USING UDE/UDE2 ON XBOX LIVE 1. Have Your Xbox in a Retail State (No Exploit Whatsoever) 2. Setup Your xbox live account & let XBL Upgrade Your Current MS Dashboard to the Latest Version Automatically. 3. Install UDE/UDE2 Softmod Exploit. And to be safe always choose a XBL Safe BFM Bios like X2 4980-81 booting Red Led so U know if its on. 4. Boot with a retail game inside the drive (the game has to be in it when you turn on the xbox) and it will bypass UDE/UDE2. Now you can go into XBL safely from the retail game. Enjoy Mate, We all did |
I would pin, but it's not 100% accurate. While this is almost correct, most games (not new) require a xbox live update (new levels, bug fixes etc.) Without these updates installed, you will get sent back to the original live 2.0 dashboard (which isn't there when UDE1 / UDE2 is installed.) I explained this very briefly here. Add this and I will be glad to add it to the tutorials post.
-devz3ro
Post by: krayzie on July 29, 2004, 11:25:00 PM
| QUOTE (fatbastard911 @ Jul 30 2004, 06:40 AM) |
| 2) Use the New Ude 2, PBL Metoo and whatever bios that corresponds to your Xbox Kernal Version...look it up in the pin section if you do not know...This will allow you to be able to use the newest dashboard version 5659.03.... instead of 4920..... Pal readers follow the instruction in the UDE 2 post about how to change your xbox version to NTSC in order to load UDE 2. |
Dude why the hell are you advising on people to mess with their eeprom to use the UDE2. UDE2 is only beneficial for 5713 or up kernels. If you have a kernel lower than 5713 you should stick with UDE1 Especially when you have a PAL xbox.
Also if you changhed your region to ntsc you would have to import all your live games since you couldn't go live anymore with your own games!
Post by: Angerwound on July 29, 2004, 11:35:00 PM
Post by: fatbastard911 on July 29, 2004, 11:17:00 PM
| QUOTE (krayzie @ Jul 30 2004, 05:52 AM) |
| Dude why the hell are you advising on people to mess with their eeprom to use the UDE2. UDE2 is only beneficial for 5713 or up kernels. If you have a kernel lower than 5713 you should stick with UDE1 Especially when you have a PAL xbox. Also if you changhed your region to ntsc you would have to import all your live games since you couldn't go live anymore with your own games! |
I agree w/ you when it comes to pal xbox's but the UDE 2 allows for use of a newer dash instead of the 4920 dash, doesn't XBL look for your dash version and if it sees an older version it will try to update before letting you play online?Edit to what I said in an earlier post; PAL users should just stick to UDE 1 it's probably the simpiest way...Thanks Krayzie.
W/ Angerwound's post;
Great comment, no probs. It is probably true but the update.xbe will want to update your dashboard and thus look at xboxdash.xbe to see if it's authentic. If not = hammers ur xbox files especially on c: drive. At least that is what I have learned when it done it to me
Post by: brianforever on July 30, 2004, 12:15:00 AM
| QUOTE (devz3ro @ Jul 30 2004, 06:48 AM) |
| I would pin, but it's not 100% accurate. While this is almost correct, most games (not new) require a xbox live update (new levels, bug fixes etc.) Without these updates installed, you will get sent back to the original live 2.0 dashboard (which isn't there when UDE1 / UDE2 is installed.) I explained this very briefly here. Add this and I will be glad to add it to the tutorials post. -devz3ro |
Thanks devz3ro :)
Edited the front post & added your comments :)
@Angerwounds comments : I had no problems also upgrading my Mechassault & RainbowSix 3 XBL Games Online after all the installation.
This post has been edited by brianforever: Jul 30 2004, 07:18 AM
Post by: elvato on July 29, 2004, 11:59:00 PM
Post by: devz3ro on July 29, 2004, 11:59:00 PM
| QUOTE (brianforever @ Jul 30 2004, 07:42 AM) |
| Thanks devz3ro Edited the front post & added your comments @Angerwounds comments : I had no problems also upgrading my Mechassault & RainbowSix 3 XBL Games Online after all the installation. |
I have never tried it because of my understanding, but are you 100% sure? The way I understand it is: When you go to update a game, it pulls the update.xbe from the DVD (d:\update.xbe). This update, like all updates calls on the fonts located in C:\fonts or the root of C:\ to display the "updating title" etc. If the fonts are malformed, shouldn't the update.xbe crap out or lock? Test it out again just to be positive.
-devz3ro
P.S. Angerwound == evil
Post by: Angerwound on July 30, 2004, 12:36:00 AM
Downloader.xbe should work however.
This post has been edited by Angerwound: Jul 30 2004, 07:37 AM
Post by: brianforever on July 30, 2004, 12:42:00 AM
| QUOTE (devz3ro @ Jul 30 2004, 08:02 AM) |
| I have never tried it because of my understanding, but are you 100% sure? The way I understand it is: When you go to update a game, it pulls the update.xbe from the DVD (d:\update.xbe). This update, like all updates calls on the fonts located in C:\fonts or the root of C:\ to display the "updating title" etc. If the fonts are malformed, shouldn't the update.xbe crap out or lock? Test it out again just to be positive. -devz3ro P.S. Angerwound == evil :lol: |
Will try it tonight :)
Btw How do I remove the Updates for RainbowSix 3 ? :)
From the TDATA folder ? but all my Saved Maps are there :( 80mb of stuff :)
This post has been edited by brianforever: Jul 30 2004, 07:44 AM
Post by: devz3ro on July 30, 2004, 12:09:00 AM
| QUOTE (brianforever @ Jul 30 2004, 08:09 AM) |
| Will try it tonight Btw How do I remove the Updates for RainbowSix 3 ? From the TDATA folder ? but all my Saved Maps are there  80mb of stuff |
Xbox Saves Manager can make a backup and delete it for you. This way you can make the backup, delete, see if it updates, then just send all your maps back.
-devz3ro
Post by: brianforever on July 30, 2004, 12:53:00 AM
| QUOTE (devz3ro @ Jul 30 2004, 08:12 AM) |
| Xbox Saves Manager can make a backup and delete it for you. This way you can make the backup, delete, see if it updates, then just send all your maps back. -devz3ro |
Yes I have used it for my xbc saves, but it will delete evrything including my downloaded maps :(
& Strange enough when I backup the maps to my PC & transfer them back to the xbox , they become unusable for XBL :(
Can someone with a XBL Ready Game,
PLSE try updating ur game on Xbl after following the steps in this Tut
Thanks :)
This post has been edited by brianforever: Jul 30 2004, 08:07 AM
Post by: fatbastard911 on July 30, 2004, 02:37:00 AM
| QUOTE (brianforever @ Jul 30 2004, 07:20 AM) |
| Can someone with a XBL Ready Game, PLSE try updating ur game on Xbl after following the steps in this Tut Thanks |
I'll pull the trigger on my xbox when I get home, for I have an Xecuter 2 Lite modchip w/ disable chip and F boot if I screw up somehow
Post by: brianforever on July 30, 2004, 04:53:00 AM
Thanks & Good Luck to Ya :)
Post by: adil786 on July 30, 2004, 05:38:00 AM
| QUOTE (fatbastard911 @ Jul 30 2004, 10:40 AM) |
| I'll pull the trigger on my xbox when I get home, for I have an Xecuter 2 Lite modchip w/ disable chip and F boot if I screw up somehow |
good luck,
Post by: krayzie on July 30, 2004, 08:13:00 AM
| QUOTE (fatbastard911 @ Jul 30 2004, 07:20 AM) |
| I agree w/ you when it comes to pal xbox's but the UDE 2 allows for use of a newer dash instead of the 4920 dash, doesn't XBL look for your dash version and if it sees an older version it will try to update before letting you play online? Edit to what I said in an earlier post; PAL users should just stick to UDE 1 it's probably the simpiest way...Thanks Krayzie. |
Uhhh ude1 allows the newest dash also. Thank you
Post by: krayzie on July 30, 2004, 08:26:00 AM
| QUOTE (Angerwound @ Jul 30 2004, 08:03 AM) |
| I was a bit wrong, the update.xbe even from the disc will call the fonts dir, therefore if you with to run this file from the disc ( downloaded the updated engine ) you will need to set your original dash back first. Downloader.xbe should work however. |
that's what I meant with this post. Guess I will need to make myself clearer in the future. Glad to see the adition in the tut. (too bad I didn't get any credit for it though
)
Post by: Australian Rat on July 30, 2004, 08:51:00 AM
Post by: krayzie on July 30, 2004, 08:54:00 AM
| QUOTE (Australian Rat @ Jul 30 2004, 04:54 PM) |
| For live dash access you could always just create an evox script to rename the dashboard files. Just have this accessable by a gamesave, easy UDE switching on and off. Should work, then again never tried it. I got no need for live |
This is ofcourse a very safe way to toggle between mod and retail state. It does require you to own the game though.
Post by: YoshiKool on July 30, 2004, 10:21:00 AM
| QUOTE (Angerwound @ Jul 30 2004, 08:03 AM) |
| I was a bit wrong, the update.xbe even from the disc will call the fonts dir, therefore if you with to run this file from the disc ( downloaded the updated engine ) you will need to set your original dash back first. Downloader.xbe should work however. |
Would it be possible to use a Pre-Live dash on your C:\ drive that loads fonts from C:\ root, yet have UDE fonts (modified versions) in C:\fonts, and load that update.xbe from the DVD (maybe clicking a Live tab in the game) and exploit it bringing you to PBL/nkpatcher?
Useless, also the fonts would need to be like a doubledash fonts, as they don't run on boot... I guess it would be a nice proof of concept...
Post by: krayzie on July 30, 2004, 10:25:00 AM
| QUOTE (YoshiKool @ Jul 30 2004, 06:24 PM) |
| Would it be possible to use a Pre-Live dash on your C:\ drive that loads fonts from C:\ root, yet have UDE fonts (modified versions) in C:\fonts, and load that update.xbe from the DVD (maybe clicking a Live tab in the game) and exploit it bringing you to PBL/nkpatcher? Useless, also the fonts would need to be like a doubledash fonts, as they don't run on boot... I guess it would be a nice proof of concept... |
so this has a purpose of what? A new game exploit or something? also roe wouldn't be fixed
Post by: redneon on August 02, 2004, 02:22:00 AM
What would happen in this situation?
Darrell
Post by: YoshiKool on August 02, 2004, 03:57:00 AM
now that I think about it, it's a bit of a crap idea really because you'd get into a clock loop with your xbox unplugged... ah well.
Post by: eh. on August 02, 2004, 10:32:00 AM
Post by: krayzie on August 02, 2004, 10:34:00 AM
| QUOTE (YoshiKool @ Aug 2 2004, 12:00 PM) |
| krayzie: well... i thought it might be a good way to stop little sisters playing on your xbox and screwing it up.. booting the xbox normally would probably hang it - but booting with a cd in to the live tab would boot the exploit... now that I think about it, it's a bit of a crap idea really because you'd get into a clock loop with your xbox unplugged... ah well. |
How would it go into a clock loop? You boot with a pre live dash right?
Post by: YoshiKool on August 02, 2004, 10:37:00 AM
Post by: krayzie on August 04, 2004, 10:33:00 PM
Post by: chimpanzee on August 04, 2004, 11:44:00 PM
| QUOTE (knight_of_flowers @ Aug 5 2004, 07:25 AM) |
| Krayzie, does that mean that the c: drive stays intact? Nothing gets overwritten? |
Most game have 3 programs of concern :
update.xbe - since this use c:\fonts, it just cannot perform its work and it shouldn't do anything to the c:\
dashupdate.xbe - this is the most dangerous as it may update c:\xboxdash.xbe without accessing the network
My guess is the dashupdate.xbe would check c:\xodash\xonlinedash.xbe(or could it be c:\xboxdash.xbe) to see if the dashboard needs to be upgraded.
Post by: MoleX on August 25, 2004, 08:09:00 AM
| CODE |
| [Action_12] Info "Reactivate UDE" Warning "Turn on UDE?" Progress "Turning on UDE..." rename "c:\Bert-4817-01.bak" "c:\Bert-4817-01.xtf" rename "c:\Ernie.bak" "c:\Ernie.xtf" rename "c:\XBox Book.xtf" "c:\XBox Book.bak" rename "c:\Xbox.xtf" "c:\Xbox.bak" rename "c:\xboxdash.xbe" "c:\5960xboxdash.bak" rename "c:\updatexboxdash.bak" "c:\xboxdash.xbe" [Action_13] Info "Deactivate UDE" Warning "Turn off UDE?" Progress "Turning off UDE..." rename "c:\Bert-4817-01.xtf" "c:\Bert-4817-01.bak" rename "c:\Ernie.xtf" "c:\Ernie.bak" rename "c:\XBox Book.bak" "c:\XBox Book.xtf" rename "c:\Xbox.bak" "c:\Xbox.xtf" rename "c:\xboxdash.xbe" "c:\updatexboxdash.bak" rename "c:\5960xboxdash.bak" "c:\xboxdash.xbe" |
Mole
Post by: Angerwound on August 25, 2004, 09:58:00 AM
Post by: scienide on October 01, 2004, 09:11:00 AM
then MS will detect the other fonts? Or could you still access the live tab then?
With kind regards,
Marco
Post by: blackomegax on October 28, 2004, 09:58:00 AM
the end.
no doubts about being banned.
i'd be hella surprised if i got banned using a stock virgin HDD (it'd have to be able to tell the drive wasnt in the holder, and..uh..no.)
=D
Post by: Thehebrewhammer on November 07, 2004, 12:57:00 PM
Post by: User2005 on November 07, 2004, 06:13:00 PM
Post by: brocklee on November 29, 2004, 11:34:00 PM
I followd the steps, setup a live account, then installed Ude 2. i pop in mechassult retail game to play on xbox live, but it never connects. I cant go into the troubleshoot, it just hangs on a black screen.
so what i do is uninstall ude2 and try actualy playing a online match before getting ude installed.
It doesnt connect, howevver I can get into the trouble shoot. i change the IP address to auto, and it connects fine.
i fire up mech assult again, this time it connects, but it says i need an update,so i go ahead and update it, works good. i can play online.
but, the problem with that is now my save for which i use to exploit doesnt work, it says unknown for all the info of my character.
so im guessing xbox live did something to my save or the game folder, cuz now "run linux" wont work.
so im wondering if i can change those values of my ip address to auto with ude 2, is it possible? or if i just need a different game to use for setting up xbox live
thanks in advance
Post by: Strangelove1 on November 30, 2004, 09:49:00 PM
Post by: krayzie on November 30, 2004, 10:05:00 PM
Post by: Strangelove1 on December 01, 2004, 07:57:00 AM
so we don't know of any way to play xbox live with ude installed?Post by: blueinfinity on December 26, 2004, 09:51:00 PM
ude2 install i understand i boot the linux disc on my pc swap ide's etc. boom done ude is installed
now i have a 1.6 crystal xbox. that i am currently playing live on. mainly only halo 2
so now i need to make sure i know what im doing
since my xbox is 100% updated.
i am using :
- xboxhdm_v1.9
- UDE_v1.4
now the bios it wants to use im going to use the latest m8 bios with a flashing led to tell me its enabled and live protect.
so now i run this program etc and my xbox has ude2. am i safe to boot live? right?
this is wut i understand so far.
Now is there a mech assault game exploit that will install the above also? because if i need to do a dash update i will need to revert to stock and update then reinstall the ude2 files.
but for a game update i will just need to revert to original, install updates, then revert back to ude2 NOT needing to reinstall. so this can be done two ways from what i see.
1: create a game save exploit to swap all the files from the ude2 hacked files back to the stock files. then u can run my game updates and run the reverse of the above script.
2: or simply ftp in with my pc using the mech evox exploit. manually rename/move the files and replace with my stock backup then update and revert back to ude2.
now option 1 would work best as if u arnt at home and need to update a game u can do it as long as u have the game. (assuming u leave the save exploits on the xbox)
but i do not know how to do this.
i am looking for 2 save exploits for mech assault mainly
1: to install run and do the ude2 setup from mech assault launch menu
2: restore the c: files to stock
-now 1 is tricky. u would need to launch a script off a mem card to ftp to the box. then upload the ude2 install files as they are larger then a memory card. so u can ftp them in. reboot then launch THAT save file to run a linux program to do the ude2 install.
-now if u also have a save game exploit that allows u to revert back to stock for any and ALL updates u simply need to run the above ude2 install setup to reinstall ude2 ont he c drive
am i making any sence? and how hard will it be for me to make a mech ude2 installer. IF one hasnt been made? if so then how hard is it for me to make a exploit to revert back to stock?
thanks for reading above
any help would be great OR just ignore my ramblings but i see how this could worki just need my first thigns verified. installing ude2 on my live updated box threw my current method WILL or WILL NOT work?
thanks!!!
Post by: blueinfinity on December 26, 2004, 09:52:00 PM
so then my efforts are futile? ok one mor ethne.
anyway to get my eeprom info without going threw ude2 install? maybe threw a save game exploit? so i can lock a second hdd
Post by: krayzie on December 26, 2004, 09:56:00 PM
Post by: blueinfinity on December 26, 2004, 10:06:00 PM
and did it really work for you secto? let me know wha tu ahve tomorow if sitll a go ill try it also
Post by: krayzie on December 27, 2004, 12:22:00 AM
Post by: Australian Rat on December 27, 2004, 04:45:00 AM
Post by: CustomXBoxModder on January 20, 2005, 12:54:00 AM