How to dump RSA signed Insyde BIOS
Starting from 2012 Insyde Corp. implemented RSA algorithm to crypt their BIOSs to avoid modding. To unpack such BIOS with Phoenix tool is impossible. However, we are 100% certain that the BIOS rom stored in the motherboard is a decrypted variant. The easiest way to get it - make a backup of current BIOS before flashing with the new one. But we can also flash with a modded BIOS version over the same BIOS version number.
Here are the instructions:
1. Take your current executable BIOS flasher.
2. Unpack with any unzip software
3. Find "platform.ini" file
4. Edit following lines with Notepad
[BackupROM]
Flag=1
FilePath=c:
FileName=<put bios name here>.BIN
5. Flash the same BIOS again with the modified platform.ini
6. After reboot you will find dumped current BIOS on C drive