samsung j4 j400f U7 rmm pernomel remove ROOT or REPAIR IMEI DONE FIX NETWORK STATES NG GSM TAIMUR TEAM
j400f rmm unlock u7 ERROR ALL BOX 
1ST FLASH COMBINATION FILE
connect phone to pc
Download iroot TOOL
open irootTool
prees root
prees root
after root
open cmd
adb devices
adb shell
su
dd if=/dev/zero of=/dev/block/steady
rmm unlock done
after root
open cmd
adb devices
adb shell
su
dd if=/dev/zero of=/dev/block/steady
rmm unlock done
rmm unlock done
check
put phone download mode
flash 4 frimware
then root and repair imei
after rmm phone flash root file phone will b rooted
after root open octoplus box samsung
select j400f
repair imei 1 and 2
select j400f
repair imei 1 and 2
after repair imei
check imei status ng
repair network
check imei status OK
check imei status ng
repair network
check imei status OK
