Post by: syntaxerror329 on December 30, 2009, 11:33:00 PM
Xbox Hacker Thread - See reply #36 from Geremia
Here is what Geremia had to say in case you don't feel like clicking the link
QUOTE
I would suggest to transplant also area 3C000-3CFFF, which seems to be laser calibration data and changes from drive to drive.
So could this be why people have complained about read issues after flashing their Lite-on drive?
Many people even believe that laser death can occur during flashing and now disconnect the ribbon cable going to the laser before flashing Lite-on drives. Maybe calibration data has been the issue all along?
If there is truth to this then perhaps Jungle Flasher should also move this data when using a complete Lite-on dump as a source?
Post by: wang_chung on January 01, 2010, 12:47:00 PM
Post by: chipxtreme on January 06, 2010, 05:05:00 AM
Post by: mastha on January 08, 2010, 06:56:00 AM
Was going to flash a friend's Liteon 7485 HW Revision: A0A2 from April 2009, with the 1.6 non-stealth firmware, dumped the key with jungleflasher, and flashed my own Liteon 7485 HW Revision A0A1 from November 2008 with my friend's key in order to test it on his console, usually i don't do this but as my desktop died and i only had a p3 500mhz around to do it and couldn't install the sata card properly by installing uniata drivers or even deleting the via drivers or it wouldn't recognize the Liteons, so has i was afraid of the so called freezing issues i attempted with mine, all went ok and drive was flashed, tested it on console and no problem booted everything fine. Therefore i went to flash my friend's drive, but as soon as i placed it on console it would take ages to read the games either originals or copies.. some would work, others wouldn't.
Strange, flashed it again and same issue, tried to flash teamjungle's latest ix1.61 and same thing, tought i bricked the drive somehow. Posted this issue on some irc channel and one guy came to help and reported this thread, also said that it would be better to remove the ribbon cable that goes to the laser on the drive before flashing, but the error was already made?! So by getting here i was addressed to that geremia's post on xbh, and if that power calibration data was overwritten and drive would not work properly, there could be a chance the laser wasn't dead at all but just with wrong pcd.. so i tought about flashing stock firmware i had dumped.. and baam it would load originals just fine, after that i flashed the teamjungle ix1.61 (also disconnected the ribbon cable) and then the test was successful, all worked.. but has i wanted to flash a firmware that wouldn't need the use of activate.iso on further waves i attempted to flash 1.6 non-stealth again and same stuff occurred games would not load by a random factor either being originals or backups. Strange stuff.. flashed ix 1.61 again and it would not work again.. Had to flash original firmware and ix 1.61 after that for it to work properly..
Dunno why this happened, mine had no problems with this, and only difference is hardware revision between drives.. Hope this helps somehow to solve this issue that seems to be happening to some people.
Post by: hetster on January 08, 2010, 02:03:00 PM
i agree it would be a great addition to add a button to jungle flasher to copy that section of the firmware..
this is also great for the new drives..pretty useless for the older drives though..ive had afew back after a feww weeks with open tray errors. but as its been erased and the only dump is a dummy not a full dump as is now available these drives are useless really unless there is a good average we can use..i think compariung data would be invaluable in finding out why some lasers die very quickly and that the above poster can see physical evidence of this which could be the calibration in the firmware..
Post by: kingpickle on January 08, 2010, 02:24:00 PM
Post by: catchthabeat on January 09, 2010, 01:38:00 AM
Post by: syntaxerror329 on January 09, 2010, 09:41:00 AM
I am really annoyed that no one from the team has bothered to comment on this topic. Perhaps its gonna cost $42 if we want the answer from them.
Post by: syntaxerror329 on January 10, 2010, 08:34:00 AM
QUOTE(Haygar @ Jan 10 2010, 01:54 AM) 
I wonder if original benq firmware contains this also since they were never perfect at reading backups.
Maybe a stupid question, I'm watching Green Acres.......
I am pretty sure all benq original firmwares are basically the same. The key moves around a bit but besides that nothing special. Also i think the problems with benq not performing good on backups like GTA4 was fixed in iXtreme 1.41
Post by: syntaxerror329 on January 19, 2010, 10:29:00 PM
From JungleFlasher 0.1.70(85) Change log
Calibration data
- spoof copies calibration data if present in source
- dummy from target will place calibration data in dummy v2 at same location
Post by: barloue on January 20, 2010, 12:24:00 AM
Genuine iXtreme Lite-Touch
Drive key @ n/a 77777777777777777777777777777777
Firmware Osig: [PLDS DG-16D2S 7485]
Firmware is: iXtreme LT
Spoofing Target
DVD Key copied to target
Inquiry string copied to Target
Identify string copied to Target
Serial data copied from Source to Target
No Calibration data in source
which would mean if you use original firmware it would copy the calibration data but wont on a dummy as the dummy doesnt take the calibration info from the drive.
anyone have thier origina that they can quickly run through and post the log at bottom just to confirm this?
Post by: funky26cro on January 20, 2010, 07:15:00 AM
Post by: xbox360sexual on January 20, 2010, 09:39:00 AM
Don't worry about it, IMO. Not enough is known about this data to fret over.
Post by: bennybullfrog on January 20, 2010, 03:21:00 PM
How do I do this on my 74850? There's no easy way is there?
I wonder how important this data is. I'm a bit reluctant to flash LT now because obviously, if I do, my calibration data is lost forever.
Post by: ponbiki on January 20, 2010, 06:38:00 PM
QUOTE(bennybullfrog @ Jan 20 2010, 05:21 PM)
So obviously the only way to preserve this calibration data for your own drive is to do a full dump.
How do I do this on my 74850? There's no easy way is there?
I wonder how important this data is. I'm a bit reluctant to flash LT now because obviously, if I do, my calibration data is lost forever.
The "easy" way for a full dump is to use the Xecuter LT Switch, or something similar. I didn't feel the calibration data was worth it to buy and install that since I already invested in the probe kit and was worried about cutting/soldering.
What I am hoping for is after people have dumped enough original firmwares we can determine a method to change the cablibration data in case someone is having problems reading discs. Unless LT is designed in a way that it adjusts the calibration on the fly.
Post by: AZImmortal on November 16, 2010, 11:30:00 PM
Post by: Buzzcut on November 17, 2010, 02:31:00 AM
Post by: AZImmortal on November 17, 2010, 09:40:00 PM
Post by: benson733 on December 09, 2010, 11:14:00 PM
The hard way "well, more hard than the probe" would be to MRA, LT switch, vampire, whatever method and get the calibration data from the full dump. If it was said not to be important than I would say using the dummy.bin is fine besides the fact of not being able to return to stock. Lucky for me I have a stock drive and another drive with LT+, this way I am able to do updates etc on stock and then return the modified drive back to the console.
I feel that the liteon drives have the most issues reading media after awhile anyways. All my read issues were from consoles that had liteons, as well as all my friends liteon drives.
Post by: Redsquirrel on December 10, 2010, 01:43:00 AM
But i read, on the 7x series at least that the callibration info is useless.
So yeah i was a little annoyed id spent so long doing on those drives like that. Ah well, least i got practice for the x9 series etc.
Post by: totoz on December 10, 2010, 08:32:00 AM
QUOTE(Buzzcut @ Nov 17 2010, 10:31 AM)
OggyUK says it's useless and that's good enough for me. I still use probe for v7 and lo83info for 8v-1 drives and never had an issue.
same here, never had a problem
Post by: Dark Mod on December 10, 2010, 10:03:00 AM
I think it would be a wise decision to do a FULL dump of all liteons from now on.
Sure it will work on a few liteons, but some very fussy on originals and backups after flashing. and i'm glad this thread is open concerning comatose lasers and calibration issues cause i'm studying the drive's behavior too long when it gets flashed with custom firmware and the original firmware.
Post by: OggyUK on December 10, 2010, 11:48:00 AM
"He don't give 2 shits about it" -
Because it's redundant, go run the tests for yourself. Why are all restickered 93450c blank in this area? Why are refubs blank in this area?
Geremia provided the base for everyone to see this for themselves.
Why don't you do some fucking research instead of making uninformed posts?
Post by: Dark Mod on December 10, 2010, 12:41:00 PM
our main concern is on calibration, but if you don't have nothing good to say, STFU or sit in the back and keep your comment to yourself
Post by: OggyUK on December 10, 2010, 03:16:00 PM
Have you ran geremia's tests?
No.
Obviously 3c000 data is lost on 7 series modding, if you dvdkey it, it's not dumped.
My comment both now, before and in the quoted post is relevant to the data, and that data is not relevant to calibration.
So, my point is valid, you're just applying it to a theory that's proven to be incorrect.
When you've bothered to research these things. And can make an informed comment, you probably will find I'll listen to what you are saying, if you're just echoing a theory that's been proven wrong and you can see it for yourself by doing a few simple tests then don't be taken aback when I put you in the back, where you belong.
If it's something good to say, that what you want from me... Tough fucking shit.