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I had a successfully flashed 1.0 mobo with an X2 BIOS. I got a little curious and flashed the X3 3294 BIOS and now my console wont turn on. Light turns green, fans spin and then immediately turn off. Honestly, I kinda expected it. But what are my recovery options? I know I can install a modchip on top of it, but I don't want to fork out an arm and a leg for a good one. Theres some cheap ones on ebay right now for about $5 and I'm curious if I buy one, install it and go to reflash, how do I get it to flash the mobo TSOP and not the modchip? Thanks for reading.
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TSOP Flashing Unlock points
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TSOP unlock points for version 1.0/1.1 Xbox
This is the top of the motherboard
Connect the two solder pads at R7D3 as in photo above.
This is the bottom side of motherboard
Connect the two solder pads at R7R3 as in photo above.
All Ver 1.0/1.1 Xbox's with a 'SHARP' TSOP chip must also connect the additional red wire as in the photo above. All other TSOP's DO NOT require this step.
TSOP Unlock points for all Versions 1.2/1.3/1.4/1.5/ Xbox's
This is the top side of the motherboard
These Xbox's have both points located on the top of the motherboard, for the first point connect the two solder pads at R7D10 as in photo above. For the second point locate the junction between R7D2 and R7D1 and connect the two solder pads as in the photo above.
After the solder points are completed you should re-assemble your xbox (but leave the top cover off) when the power button is pressed it should boot normally as it did before you started.
Note if you get the message TSOP write protected while attempting to Flash the TSOP you might need to check and resolder the points to ensure a good connection was m while attempting to Flash the TSOP you might need to check and resolder the points to ensure a good connection was made.
To split Split a 1MB TSOP (v1.0, v1.1) into 4 banks of 256k, the following picture explains how to accomplish this:
Note: If you have a 1.6/1.6b Xbox, it has no TSOP and therefore you cannot flash it. You will have to install a modchip or softmod.