Stuck on samsung logo bootanimation
Red lines? IDK, i only see the normal recovery and say E: Failed to mount /efs (Invalid argument) no more.
You will see this in the stock samsung recovery?
Then you have a problem on your efs partition which will cause the bootloop.
Formatting the efs partition would fix the bootloop but then you will loose your imei number and this will break mobile networks.
The only thing you can try is to fix a possible filesystem error on the efs partition or give the device to a service station which can restore the efs partition.
To try if you can fix it you can do the following steps:
1. flash this kernel with odin https://www.androidfilehost.com/?fid=745425885120702299
2. boot into recovery connect the device to your pc and use the mass storage mode to copy this 2 files to the sdcard
Nightowl-cm12.1-20160215-n7000-kernel_only.zip
https://forum.xda-developers.com/devdb/project/dl/?id=16862
recovery-twrp3.1.0-build2-isorec-n7000.zip
https://forum.xda-developers.com/devdb/project/dl/?id=23751
3. disable the mass storage mode in the recovery and disconnect the device
4. use the recovery to install Nightowl-cm12.1-20160215-n7000-kernel_only.zip
5. use the recovery to install recovery-twrp3.1.0-build2-isorec-n7000.zip
6. reboot the recovery (you should now see a team win recovery if everything worked well)
7. go to advanced-Terminal and enter the following to backup the current efs partition content to your external sdcard:
Code:
dd if=/dev/block/mmcblk0p1 of=/sdcard1/efs.img
Code:
e2fsck -fpv /dev/block/mmcblk0p1
if it could fix errors you can try to install your stock rom again with odin.
If this steps will also not work then you need to give it to a service station (or format the efs partition and use the device as a wifi only device without any telephony support)