Blue Light Of Death.

[TheKingdom009]

Hi Andy. my teensy got issues and It dumped wrong sflash. now flashing it back on the machine it gives blod.

how can I validate my sflash.

[andy-man]

CoreOS is encrypted and if it is damaged you are out of luck
Even revert will not help if both slots are corrupted

However you can run Base validation:
8: Additional tools > 8: Base validation and entropy stats

Always use off-board reading for a first dump

100% safe method:
Write your dump to spare flash IC while keep original chip - after you can use original chip for next console as spare chip.
Just 1 spare chip to save you from a lot of problems... (alright 2 chips: WSON8 and SOP16)