Foxflash read and write Peugeot 5008 Continental Sid807Evo ECU in boot mode successfully.
Continental Sid807Evo.
Read ok in boot.
Write ok in boot mode.
I heat all slowly and open it slowly.
Checksum by foxflash.
Dpf off.
All ok.
Check boot pinout here
http://www.pcmtuner.org/psa-sid807evo-boot-pinout-to-foxflash/