I tried dd two ways. First from booting from NAND, mounting the SD and reading the disk image from /mnt/sd/fs. Second attempt was booting from sd and reading the disk image from /fs. Both fail with the same reason:
Code:
Init Flash Error !!!
fd_init Done !!!
insmod: can't insert '/lib/modules/module.ko': Operation not permitted
mount: mounting /dev/mtdblock6 on /mnt/onboard failed: No such device or address
PORT: 4034920448 baud 115200 uart: ulcon = 0x00000003, ucon = 0x000003c5, ufcon = 0x00000051 ubrdiv 0x00000023 umcon 0x00000000
Please press Enter to activate this console. hwclock: settimeofday() failed: Invalid argument
# cd /fs
# ls -ltr
-rw-r--r-- 1 1000 1000 876609536 Feb 27 2019 N416mtdblock6.img
# dd if=N416mtdblock6.img of=/dev/mtdblock6 bs=1024k
dd: can't open '/dev/mtdblock6': No such device or address
Logs for both attempts attached.