A few months back I was setting up a "perminant" debug console. I tried a few BIOS's with my modchip to make damn sure it would work, and got the best results with the TATX Dual image. I installed a softmod using Hexens, removed the modchip and booted into EVO-x. In a moment of complete idiocy, I flashed the stock debug bios. As you can guess, reboot, reboot, frag. Apart from soldering in a good flash and sticking the correct image on that, or socketing the chip and doing a hot swap, is there a reliable way to fix my cock up? I know there is the "repair" bios about, but that requires a mostly good flash. I destroyed an xbox years back that had a faulty drive before I really cared or knew about modding them. Would have had a perfect donor for a RAM upgrade and a spare flash in case of a clusterfuck like this.
reinstall modchip, boot evox, then remove chip from the running box. now flash the bios - this goes to the tsop again, since the chip "overlaying" it is gone.
When the console boots from LPC, the onboard flash is disabled, just says FF for device and vendor ID and can't flash.
It shouldnt be disabled if you have it set to write. Wasn't the whole point of the LPC to flash the bios?
If you boot a Modchip first to get to the flash window you wont have any luck. You had to ground D0 which causes the xbox to completely ignore the original bios chip and ONLY boot from LPC. Ive tried that method Many many times and not once has it ever worked. You will need a old 29 wire modchip to reflash the original tsop.. Was this a retail xbox you were turning INTO a debug? Also Which bios did you flash? Like how big was the Bios image? Also which version xbox motherboard?
Yeh, I flashed a retail console with a debug bios. It was a 1MB image flashed onto a 1.1 console. I can still use it, I have a duox-2 in it, but I wanted to keep that as a spare.
Yea sadly I know of no way to fix it without one of those old chips. You either need a new Xbox or use that modchip
It is actually a v1.2 or v1.3 box, I'm getting confused because I swapped board and drive between 2 consoles. I've actually downloaded that BIOS from the thread, but AFAIK, doesn't it still need at least a partial good flash to be able to continue starting up?
I forgot Benny made that! never tried it yet tho, It takes advantage of your Modchip. You boot the xbox with your chip, flash his bin file to one of the banks then reboot the xbox with that other bank and follow his steps to reflash the onboard Tsop.. Let us know if it works or not!
I'll give it a try later on. I did have a recovery bios a while back but it required a partial flash of a good BIOS on the TSOP, it had a yellow flubber animation I think.
No luck with a v1.4 that I'm sorting out. Flashed from evo-x using softmod and getting reboot, reboot, frag. Benny's bios just keeps flashing green until D0 is removed, then it reboots.
Hi you can try this is old method but it works making a homebrew 29 wire chip(eeprom) flash a bios to it with a programmer or using a pc with socketed bios flash a bios like evoxm8 to the homebrew chip boot from it then ou need to disable or remove the homebrew chip or cut lines 16 and 32 to disable the homebrew chip or using a switch to disable those lines with the console still on then reflash the tsop with hexen disk diagram homebrew modchip here http://www.xbox-scene.com/modchips/ownmod_diagrams.html.
I found a dual interface flashrom that I can program over LPC by doing a modchip hot-swap, and then wire up in parallel as with a homebrew chip. I'm also looking into getting a batch of PCB's made that fit in the TSOP footprint, and bring all the connections out to easy to solder points on one side of the board, and into a flashrom on the other side (if I can find a flashrom with a small enough footprint to fit inside the outline of the TSOP package. Can then either solder on a new chip and put it in place of the stock one, or bring out the connections to wires on easy to solder pads
I made a backup of http://www.xbox-scene.com/modchips/ownmod_diagrams.html. Here: http://www.ogxbox.com/forums/index.php?/topic/238-ownmod-schematics-for-tsop-recovery/
WayBack Machine copy of webpage: http://www.xbox-scene.com:80/modchips/ownmod_diagrams.html Use an old EPROM (27C2001/27C020 or bigger) or Flashrom (29F020 or bigger) for the 29-wire mod. Cut wire to either pin 16 (GND) or 32 (Vcc) will disable it before flashing onboard TSOP. Or, ... If using an LPC-based modchip, try flashing a bank with either d6 tsop (v1.0-1.3) or m7 tsop (v1.0-1.5) BIOS, boot Xbox with this new BIOS, remove the modchip before re-flashing the onboard write enabled -- jumpers soldered to enable Flash write for your Xbox motherboard version -- TSOP.
