Group: Members
Posts: 836
Joined: 10-March 04
Member No.: 106085
Xbox Version: v1.0
360 version: v4.0 (jasper)
You can't flash the TSOP after booting up the console with an LPC modchip. There might be an alternate point for A19 somewhere but I'm not sure. You might also be able to expose the copper trace that leads to A19 and solder to that instead, but if you're not confident in being able to do that, then i wouldn't risk it.
Group: Members
Posts: 1512
Joined: 16-January 06
Member No.: 268762
Xbox Version: v1.4
360 version: none
The track will end up at the TSOP. Search for a spec sheet. You could try to reconnect it from there to a valid trace. Or just ground it and you will only have a two 256k banks, or one 512k. Assuming it is already flashed it should work. I don't think you will be able to flash it again.