flash protect 0 0 last off Or:

Failed - Remote 39: Flashing lock flag is locked. Please unlock it first. Fix in CFE:

It sounds like you’re encountering an error message from a device, software tool, or embedded system (possibly a router, network switch, microcontroller programmer, or industrial equipment).

stm32f1x unlock 0 During boot, interrupt into CFE and run:

mw 0x<address> 0x12345678 # unlock command (address varies) protect off all erase <start> <end> Or (for SPI/NOR flash):

sf probe sf protect unlock <addr> <len> Connect via JTAG/SWD and run: