[Teclast X98 Air 3G] adyjob:
i follow your instruction as well but fail and end up below error:

Downloading BUSYBOX

--2014-12-12 21:32:15-- http://busybox.net/downloads/binaries/latest/busybox-i5

86

Resolving busybox.net... 140.211.167.224

Connecting to busybox.net|140.211.167.224|:80... connected.

HTTP request sent, awaiting response... 416 Requested Range Not Satisfiable

The file is already fully retrieved; nothing to do.

.

.

. Clean system ...

mount: Operation not permitted

rm failed for /system/bin/su, Read-only file system

rm failed for /system/xbin/su, Read-only file system

rm failed for /system/xbin/daemonsu, Read-only file system

rm failed for /system/etc/install-recovery.sh, Read-only file system

rm failed for /system/etc/.installed_su_daemon, Read-only file system

rm failed for /system/app/Superuser.apk, Read-only file system

rm failed for /system/app/Superuser.odex, Read-only file system

rm failed for /system/app/SuperUser.apk, Read-only file system

rm failed for /system/app/SuperUser.odex, Read-only file system

rm failed for /system/app/superuser.apk, Read-only file system

rm failed for /system/app/superuser.odex, Read-only file system

rm failed for /system/app/Supersu.apk, Read-only file system

rm failed for /system/app/Supersu.odex, Read-only file system

rm failed for /system/app/SuperSU.apk, Read-only file system

rm failed for /system/app/SuperSU.odex, Read-only file system

rm failed for /system/app/supersu.apk, Read-only file system

rm failed for /system/app/supersu.odex, Read-only file system

.

.

. Send files ...

push: root/system/app/Superuser.apk -> /data/local/tmp/system/app/Superuser.apk

push: root/system/app/install-recovery.sh -> /data/local/tmp/system/app/install-

recovery.sh

push: root/system/app/99SuperSUDaemon -> /data/local/tmp/system/app/99SuperSUDae

mon

push: root/system/xbin/su -> /data/local/tmp/system/xbin/su

push: root/system/xbin/busybox -> /data/local/tmp/system/xbin/busybox

5 files pushed. 0 files skipped.

2956 KB/s (3454697 bytes in 1.141s)

.

.

. Copy a files to your system ...

cp: /system/xbin/daemonsu: Read-only file system

cp: /system/xbin/su: Read-only file system

cp: /system/bin/.ext/.su: No such file or directory

cp: /system/app/Superuser.apk: Read-only file system

cp: /system/etc/install-recovery.sh: Read-only file system

cp: /system/etc/init.d/99SuperSUDaemon: No such file or directory

cp: /system/xbin/busybox: Read-only file system

touch: /system/etc/.installed_su_daemon: Read-only file system

.

.

. Set rights ...

Unable to chown /system/bin/.ext: No such file or directory

Unable to chown /system/bin/.ext/.su: No such file or directory

Unable to chown /system/xbin/su: Read-only file system

Unable to chown /system/xbin/daemonsu: No such file or directory

Unable to chown /system/etc/install-recovery.sh: No such file or directory

Unable to chown /system/etc/init.d/99SuperSUDaemon: No such file or directory

Unable to chown /system/etc/.installed_su_daemon: No such file or directory

Unable to chown /system/app/Superuser.apk: No such file or directory

Unable to chown /system/xbin/busybox: Read-only file system

Unable to chmod /system/bin/.ext: No such file or directory

Unable to chmod /system/bin/.ext/.su: No such file or directory

Unable to chmod /system/xbin/su: Read-only file system

Unable to chmod /system/xbin/daemonsu: No such file or directory

Unable to chmod /system/etc/install-recovery.sh: No such file or directory

Unable to chmod /system/etc/init.d/99SuperSUDaemon: No such file or directory

Unable to chmod /system/etc/.installed_su_daemon: No such file or directory

Unable to chmod /system/app/Superuser.apk: No such file or directory

Unable to chmod /system/xbin/busybox: Read-only file system

root@x98air_hg6m:/ #

*** any idea what when wrong. I already enable the usb debugging.