unlock bootloader without Pc - Samsung Galaxy Ace 4

Hi!
I have Samsung ace 4 sm-g357fz and i have root the phone with Kingroot and it goes ok,but now i have problem to unlock the bootloader.. I try with Rashr and its not working for me..
I dont have a computer so if can anyone help me to unlock the bootloader and install twr recovery it will save me from further problems and trouble with this I will be thankfull..
Sorry for my bad English.

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dr_jerremy said:
Hi guys,
Yesterday I both mu lg l9 p760 and flashed 20B kdz.everything goes fine,but when I try to unlock bootloader phone reboots and dont wanna go into fastboot mode,I get normal reboot
I tried metod http://forum.xda-developers.com/showthread.php?t=2221102
Any solution?
Click to expand...
Click to collapse
I get this situation too as many others.. we are all waiting for a new method/solution
Try to check wich bootloader version u have... i think is something wrong with LK MAY-2012 version
if u want to check type : 3845#*760* Version Info --> Sw Version Info --> Ap bootloader Version
same problem
I have the same problem, any fix?
I have bootloader LK MAY 2012.
I try every everything.. no success..
maybe someone better.. can help...
For information, my "AP Bootloader Version" is "LK MAY-2012" and I didn't have any issue to unlock my bootloader. So those unlocking issues don't seem to be caused for this reason.

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