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Monthly Archives: September 2018

Dump the GBA BIOS using Multiboot.

I created a program to dump the GBA BIOS using the Raspberry Pi Advance Expansion Board.

As it is now, the tool that can be sucked out is gone, so please use it if you want to suck out yourself.



I use the multiboot program of akkera102 and the example of DebkitPro.


How to use


  1. Connect communication port of expansion board and communication port of GBA main unit with communication cable (for GB pocket etc.)
  2. Start GBA with no cartridge inserted

$ git clone

$ cd biosdump_rpa

$ sudo ./biosdump

Waiting for GBA…
Sending header.
Getting encryption and crc seeds.
Seeds: d4, 95, ffffc5d1
Waiting for checksum…
Gba: f157, Cal: f157
Boot Done.
Comm connect start…
Connect success!
Recieve start…


recive finish!

4. It is stored in the biosdump_rpa directory under the file name GBA.BIOS


Update raspiadvrw (v1.11.0)

Updated raspiadvrw (rpa) of the software for Raspie expansion board to 1.1.0 1.11.0!

How to install (update)
Execute the following command from the console.
$ wget
$ sudo dpkg -i raspiadvrw.deb

How to operate the backup memory

Read saved save data from backup memory of cartridge
$ sudo rpa -s -r game1.sav

Write save data to the backup memory of the cartridge
$ sudo rpa -s-w game2.sav