There may be times when the U-Boot image in the NAND may get corrupted ... Or perhaps the U-Boot needs to be updated to a different or fixed version. This video shows how to restore and update the U-Boot image in the NAND flash on the OMAP-L138 LCDK EVM (TMDSLCDK138). 

There are three methods for flashing NAND on the OMAP-L138 LCDK:

• Using UART2 mode through USB-UART port
• Using “nand write” command from u-boot prompt
• Using the user space utility from Linux kernel