Backdoor Key Not Working (K32L3A) - The nightmare continues!

Samson88 — Wed, 18 Oct 2023 15:21:59 GMT

I have been struggling with this for days. I have tried numerous variations of the below commands, switching byte / bit order around, etc. Can someone please show me how to use the backdoor key on this device? (K32L3A60VPJ1AT)

I feel like I'm going insane!!

blhost -p COM5 flash-erase-all-unsecure
Ping responded in 1 attempt(s)
Inject command 'flash-erase-all-unsecure'
Successful generic response to command 'flash-erase-all-unsecure'
Response status = 0 (0x0) Success.

blhost -p COM5 get-property 17
Ping responded in 1 attempt(s)
Inject command 'get-property'
Response status = 0 (0x0) Success.
Response word 1 = 0 (0x0)
Security State = UNSECURE

// ** program backdoor key **//

blhost -p COM5 flash-program-once 0xB0 8 0102030405060708
Ping responded in 1 attempt(s)
Inject command 'flash-program-once'
Successful generic response to command 'flash-program-once'
Response status = 0 (0x0) Success.

// ** enable security (FSEC bits 1:0) **//
blhost -p COM5 flash-program-once 0x80 4 FFFFFFFF
Ping responded in 1 attempt(s)
Inject command 'flash-program-once'
Successful generic response to command 'flash-program-once'
Response status = 0 (0x0) Success.

// ** enable backdoor key ** //
blhost -p COM5 flash-program-once 0x83 4 FFFFFFFE
Ping responded in 1 attempt(s)
Inject command 'flash-program-once'
Successful generic response to command 'flash-program-once'
Response status = 0 (0x0) Success.
blhost -p COM5 reset
Ping responded in 1 attempt(s)
Inject command 'reset'
Successful generic response to command 'reset'
Response status = 0 (0x0) Success.

blhost -p COM5 get-property 17
Ping responded in 1 attempt(s)
Inject command 'get-property'
Response status = 0 (0x0) Success.
Response word 1 = 1 (0x1)
Security State = SECURE

//** unlock device with backdoor key **//

blhost -p COM5 flash-security-disable 0102030405060708
Ping responded in 1 attempt(s)
Inject command 'flash-security-disable'
Response status = 103 (0x67) kStatus_FlashAccessError

MCU BootloaderのトピックBackdoor Key Not Working (K32L3A) - The nightmare continues!

Backdoor Key Not Working (K32L3A) - The nightmare continues!