here's how i understand it all...
if you're opening up the xbox and soldering the points so that you can flash the TSOP, you don't need to put the matrix chip in to flash it. you can do it with the version of evox that boots from using the 007 agent under fire exploit. so what you need is:
original copy of 007 agent under fire
get the 007 evox dash floating around, and ftp it's contents to your modded box. not just anywhere, it comes with instructions on where to put it.
once it's on there, you can go into the ms dash, and move the 007/evox gamesave to a memory card.
take the memory card to the unmodded box, move it to the hdd there.
run 007 original disc in unmodded box. choose load game, and choose the one that's the evox 007 exploit.
this should boot up evox. now you could have ftp access to this unmodded xbox, which means you can put the bert is cheating on ernie files etc etc. you could also flash the TSOP if you've soldered the points on the mainboard, without putting the chip in. of course, if you're opening the box anyway, it could be easier to just pop in the matrix to get ftp access instead of doing the roundabout 007/evox method. That's just a way to do it without opening the box i reckon.
and remember, current bert is cheating on ernie stuff only works with kernel version 4034. probably will be expanded in the future, but for now that's it.
-nsn