https://devzone.nordicsemi.com/f/nordic-q-a/2100/nrf24lu1-programs-a-byte-through-spi-command-a-strange-problem-occuredbefore i write the flash, it has been erased.so ,its value is all 0xff. when i write 0x00 to flash address 0x0001,the value read out is not 0x00 but 0x01,and the value in flash address 0x0000 is changed to 0xFE . eg. flash address 0x0000~0x0003 en-USTelligent Community 13Tue, 14 Nov 2017 10:43:53 GMT