Hi again,
I flashed mtd0 only and the router can start and work normally.
However when I connected TTL, I found one line from uboot indicate that bad CRC.
How is the CRC calculated?
id read 0x100000ff
flash size 16MB, sector count = 256
Flash: 16 MB
**** Warning - bad CRC, using default environment*
In: serial
Out: serial
Err: serial
Net: ag7100_enet_initialize...