I am using a S25FL256S - 256MBit FLASH, I am able to read register values, erase the entire device or just a few blocks, read and write to the device, everything... However, when I do a power cycle, all of the values written to FLASH before power off and power up, are "erased" and the FLASH just contains all 1's (It seems like the flash is being initialized to an erased state on every power up)
I have checked the CR1 BPNV bit and it is set to 0
