the correct firmware from a trusted developer forum (like XDA Developers) or the manufacturer.
sudo umount /dev/sdXN sudo mount -o remount,rw /dev/sdXN /mnt/udisk Mnt Media-rw Udisk Update-zip Download Free
If not already mounted, create a mount directory and mount it read-write. the correct firmware from a trusted developer forum
: This is a system directory in Android where the OS mounts removable storage. Mnt Media-rw Udisk Update-zip Download Free
Alternatively: