For everyone experiencing the same issues, I managed to fix it with removing the external flash and using the internal 4MB in my case.

I think that writing goes successfully but the problem occurs on booting the device. It checks the checksum of the internal memory and the problem occurs.

It would ...

Hello everyone!

I have designed a custom board with external flash memory (W25Q128JVSIQ from Winbond) with each pin directly connected from microcontroller to the flash chip. I have used a 100nF capacitor on the power rail and while the chip is recognized and flashed successfully, I always get ...