Dear all,
I almost managed to root my A1 810... But I need advice to effectively achieve it.
Here are the main steps I followed :
Under linux (Ubuntu 14.04) (These are not detailed instructions, only the main steps. I will post a detailed step by step once finalized)
I didn't brick my tablet ... But it is not effectively rooted either
I checked from the terminal emulator that "su" has the correct properties :
ls -l su
-rwsr-sr-x root shell 311872 2014-08-15 23:16 su
But when I try something like :
su
ls /data
I get : opendir failed. Permission denied.
Obviously, I am not root...
Any idea ?
I almost managed to root my A1 810... But I need advice to effectively achieve it.
Here are the main steps I followed :
Under linux (Ubuntu 14.04) (These are not detailed instructions, only the main steps. I will post a detailed step by step once finalized)
Code:
- From PC : upload busybox binary file to the tablet
- From Tablet : install "ExDialer & Contacts"
- From Tablet : initiate engineer mode (Dial *#*#3646633#*#* from ExDialer)
- From Tablet : initiate telnetd (run command from MTKlogger from within ExDialer)
- From PC : initiate a shell on tablet with adb
- From the shell : initiate a telnet local connection to tablet
- From the telnet session find out the position of the Android partition (cat /proc/dumchar_info)
- From the telnet session dump the android partition to a gzip file (dd if=/dev/block/mmcblk0 bs=4096 skip=17664 count=262144 | gzip > /data/local/tmp/system.img.gz)
- From PC : download the system image
- From PC : mount the system image on a loop device
- From PC : copy a su binary file to /system/bin ()within the mounted system image)
- From PC : set the correct permissions to the su executable (sudo chmod 06755 su) => it's here that you really getting the root permission
- From PC : unmount image
- From PC : upload the upaded image to the tablet (adb push)
- From the telnet session copy the updated system image to the android partition (zcat /data/local/tmp/system.img.gz | dd of=/dev/block/mmcblk0 bs=4096 seek=17664 count=262144) (Take care that's the dangerous part !!!!)
- Restart the tablet.
I didn't brick my tablet ... But it is not effectively rooted either
I checked from the terminal emulator that "su" has the correct properties :
ls -l su
-rwsr-sr-x root shell 311872 2014-08-15 23:16 su
But when I try something like :
su
ls /data
I get : opendir failed. Permission denied.
Obviously, I am not root...
Any idea ?
Last edited: