Dual bios issue

[Toe-Knee]

Hi guys.

Recently my dual bios install is having issues.

Every now and then the dc doesn't boot its just a black screen. Switching back to the stock bios is fine and the next boot will be fine on the dreamshell bios.

When it's having issues of I try to flash the new bios again it errors when writing around 5-6% with error code 5.

I'm currently away from home so can't get photos or check anything but any ideas for when I'm home are welcome.

I'm suspecting maybe an intermittent connection somewhere?

Thanks guys
Looking forward to future DS updates.