Plan to upgrade uboot according to instructions: https://forum.doozan.com/read.php?3,12381
but can't use command in /usr/sbin directly, it shows" -bash: fw_printenv: command not found" after fw_printenv, need to /usr/sbin/fw_printenv, then
/usr/sbin/nanddump --noecc --omitoob -l 0x80000 -f mtd0 /dev/mtd0,
but it shows: mtd0: Read-only file system, how to fix this problem?
but can't use command in /usr/sbin directly, it shows" -bash: fw_printenv: command not found" after fw_printenv, need to /usr/sbin/fw_printenv, then
/usr/sbin/nanddump --noecc --omitoob -l 0x80000 -f mtd0 /dev/mtd0,
but it shows: mtd0: Read-only file system, how to fix this problem?