Failed -remote 39-flashing Lock Flag Is Locked. Please Unlock It First 39-- [ FHD 2025 ]

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).

STM32_Programmer_CLI -c port=SWD -ob Unlock Or from the GUI: go to → disable read/write protection. Option B – Unlock from bootloader/U-Boot In U-Boot (common on routers/dev boards):

mw 0x<address> 0x12345678 # unlock command (address varies) protect off all erase <start> <end> Or (for SPI/NOR flash): It sounds like you’re encountering an error message

CFE> nvram set flash_lock=0 CFE> nvram commit CFE> reboot If you can share you’re using (STM32, ESP32, router model, etc.), I can give you the exact unlock command.

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

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

sf probe sf protect unlock <addr> <len> Connect via JTAG/SWD and run: stm32f1x unlock 0 During boot

flash protect 0 0 last off Or:

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