it looks like it needs to be signed as any mod to it fails to boot. it opens correctly with intel TXE v1 Sys tools FIT 1.1.5.1162 and identifies as BAYTRAIL tablet correctly. closest TXE i can match it to is family 13 1.0.7.1133 . if i replace the txe with clean it powers up blank lit screen and hangs. as far as the signing, i’ve scoured as hex for clues and used IDA to look for a bypass to no avail.
the bios is from a tesco hudl2, i’ve got a couple of them and i currently have a board wired up to a programmer. i see there are previous threads about this bios, but they were never completed. would like to get these booting up something, i just need to somehow disable secure boot in reality so i can boot any EFI. don’t know what to do or try next i need help please.
i include the bios dump from working device and a OEM update bios/flasher that might help.
managed to do it at addresss 00500090 changing 98 03 2B 8C 50 00 4B 00 00 00 A1 59 C0 A5 E4 94 into 98 03 2B 8C 50 40 4B 00 00 00 A1 59 C0 A5 E4 94 Corrupting the platform key and allowing it to boot anything plugged into the usb.
Hi, appreciate this is a very old topic but just found one of these in the cupboard. Is it possible to disable secure boot using your method without a chip programmer?
