accidentally flashed the chip with wrong bios'

[saleen_sr71]

Well I bought a 2.6ce and everything was going good till I used the wrong bios' to flash. I originally flashed with a 512 bios which caused the xbox to frag (on selection 1) then I flashed using a 1mb bios which I read that it overrites the cromwell bios?

now it FRAGs on both selections leaving me with no way to correct my mistakes (that I know of).

Is there any way to fix this? Would the chip reprogramer work? but other than that (if it does work) is there another way?

 

[DJBOOBY]

you only need a 512k bios
x2 5035 for v1.0 to v1.5 xboxs
x2 5035 v16 plus forv1.6 v1.6b xboxs
you will have to do a hotswap or buy a programer

 

[carlospizza90]

i think there is no other way besides the reprogrammer.

 

[saleen_sr71]

Just got my new chip in today and was going to attempt to hotswap it, but I still get FRAG even with the new chip, checked the solder points and everything looked good but one connection which I fixed and still FRAG.

Im going to desolder and resolder the LPC board just as a double check, but I didnt change anything since the last time I flashed so I dont see what could be wrong.

Opinions?

 

[DJBOOBY]

what look good is not allways the case recheck all your soldering

 

[saleen_sr71]

ok i removed and replaced and still got fraging. Could it be the mother board? maybe a bad D0?

 

[DJBOOBY]

will it frag with chip turned off

 

[saleen_sr71]

No, im thinking of removing the LPC and using wires, maybe theres something wrong with the LPC

 

[DJBOOBY]

check you voltage at each pin with multi meter

 

[saleen_sr71]

well I tested a few pins and then noticed the Xbox would Flash Green and Orange everytime it turned on, then it would go in to FRAG. Did some searching and found nothing aobut flashing green and orange on start up

 

[saleen_sr71]

Im hoping these readings are right. readings are from the back fo the xbox to the front


n/a --- n/a
3.326v --- 3.326v
.8mv --- 3.323v
3.323v --- 25.4mv
3.324v --- 3.324v
4.98mv --- 138.5mv
25.2mv --- 2.815v
.8mv --- 1.5mv

 

[saleen_sr71]

Ok I think I got rid of the Flash green and orange, now im back at frag, tried 2 different D0 spots and still nothing, removed the LPC board and seemed to have messed up some traces... I think I fixed them though, noticed there was an extra connnection on the LPC than there was on the wired part of the tutorial so I added the connection after I got the same result. Now im back where I was.

 

[DJBOOBY]

if you missed one point then check all others
or remove chip and get xbox back to standed then start again

 

[saleen_sr71]

hard to get it back to OEM because i dont have the original HD being as it was a previouly modded xbox that kept having problems so it was to be updated. That and I loaned out my Xbox so i cant lock the HD to see if it will load up like normal.

I was thinking of buying a Motherboard off ebay but all the ones that are for sale say "3 flashing red lights" and they have no audio or video which im assuming have bad eeproms, but looks like i might be in the same boat trying to mod one of those boards.