How to make a 256k BIOS a 512k BIOS (xbox)

My xecuter 2 mod chip has two banks of 1m flash space (two banks @ 512k each)

The problem arises because the cromwell bios i downloaded was only 256k. I found that it just needed “padding out” so i just created a new file with two copies of the bios after each other (256k + 256k = 512k) using this command.

cat cromwell256.bin cromwell256.bin > cromwell512.bin

Then just flash using the HTTP flash bios

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