I have an Ender 5 Pro with board version 4.2.2 - that's the 32 bit version with the STM32F103. It came with Creality's firmware 1.0.1, the one for endstops. After installing a Creality BLTouch, I somehow managed to flash the appropriate BLTouch-firmware 1.1.1 via the SD-card (.bin file) after several tries. But since that, I cannot flash any other .bin file anymore, it just boots straight to the ender-spash on the screen without delay (i.e. ignoring the .bin on the card). Anybody have an idea how to otherwise flash a different firmware, perhaps via STLink? I would like to roll back to the endstops-version, since the BLTouch is really some crap and my prints no longer work.
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Firmware Update fail on Ender 5 Pro with 4.2.2. board