Erasing 128 Kibyte @ 2060000 -- 50 % complete flash_erase: Skipping bad block at 02080000
Erasing 128 Kibyte @ 3fe0000 -- 100 % complete
libmtd: error!: cannot write 2048 bytes to mtd4 (eraseblock 11, offset 36864)
        error 5 (Input/output error)
Erasing failed write from 0x160000 to 0x17ffff
libmtd: error!: bad eraseblock number 131072, mtd4 has 512 eraseblocks
nandwrite: error!: /dev/mtd4: MTD Erase failure
           error 22 (Invalid argument)
Data was only partially written due to error
: Invalid argument
Writing data to block 0 at offset 0x0
Writing data to block 1 at offset 0x20000
Writing data to block 2 at offset 0x40000
Writing data to block 3 at offset 0x60000
Writing data to block 4 at offset 0x80000
Writing data to block 5 at offset 0xa0000
Writing data to block 6 at offset 0xc0000
Writing data to block 7 at offset 0xe0000
Writing data to block 8 at offset 0x100000
Writing data to block 9 at offset 0x120000
Writing data to block 10 at offset 0x140000
Writing data to block 11 at offset 0x160000