Ripdraw board firmware flash
When NAND_LOCK is HIGH during power-up, the NAND_LOCK function is enabled.
When NAND_LOCK is enable, All the blocks on the device are protected, or locked, from PROGRAM and ERASE operations
To disable NAND_LOCK,connect 1-2 or 3-4 pin of J16 connector during power-up and Flash firmware.
SPI driver Troubleshoot
Firmware Booting Process
Emulator Flash Images