I have a s4 i9505 that i rooted, installed custom recovery, and installed the most recent cyanogen mod 12.1 snapshot (cm-12.1-20151117-SNAPSHOT-YOG7DAO1JN-jfltexx.zip )
everything installed perfectly and works fine, except for the GPS, i have read up that restoring to a stock rom and getting a lock with GPS, then flashing cyanogen mod while it has a lock via GPS will fix the problem, but i am unable to downgrade to a stock rom as the android version i have flashed is 5.1.1, and the most recent stock rom is 5.0.1, i have tried to flash with odin and i get an error saying "fail(auth)"
my phone says "write protection: enabled" in download mode and i have read that this means the bootloader is locked, so i can only downgrade if i unlock the bootloader.
does anyone have any ideas on how to do this? i have tried using adb and fastboot but my device does not support fastboot, it only has recovery/download
Related
I've done a lot of research about custom ROMs and recoveries on Samsung phones and I'm coming here to confirm what I've found.
There is no way for me to flash twrp on my Verizon SCH-I545 Galaxy S4 even though it's rooted and I have twrp manager installed.
Rashr says "partition flash successful" when I flash twrp recovery, but then when I when I reboot it says Odin error. So I'm guessing rashr cannot help me either.
I also can't make a nandroid backup because I can't flash twrp. And I can't use Android SDK Studio to unlock the bootloader because then it would brick my phone.
Is there any known reliable way of unlocking my S4? If not, I wouldn't be surprised.
Thanks in advance.
Unfortunately not. After the 4.2.2 MDK update, the bootloader was locked down and there was no longer a way to downgrade to that update or unlock the bootloader. So you'll see recent roms for it, but they are only for the people who managed to root and stop the official updates and updated manually instead.
I have a Z5C(E5803) that was originally able to unlock the bootloader and let me flash ROMs, specifically the Cyanogen ROM that CTXz has been working on. I ran out of power and got stuck in some kind of nasty bootloop yesterday that prompted me to re-flash boot.img and TWRP.
After I did these things I left it charging for a few hours and it was able to boot into TWRP where I then restored it to a backup of the basic Xperia pre-loaded ROM.
This all worked fine, thought I could boot into TWRP and just flash the Cyanogen zip again. I can get into TWRP just fine but I attempt to flash Cyanogen I get an "ERROR 7"
I have since done several wipes, gotten into the bootloader settings by entering that code in the dialer and have seen that bootloader unlock = no. I distinctly remember bootloder unlocking being allowed the first time I installed CM on my device, what could have caused this?
I was able to use it with fastboot anyway and install CM13 again, maybe this was a bug?
When I tried using oem unlock command with fastboot it said my device was already rooted even though I had just restored from a backup, and then I just proceeded normally from there.
use CM13 official Recovery to FLASH CM13.
also i don't think so twrp3.0.2 is out there for z5c. are you using any other variants Twrp? (YUGA ? )
but i cant remember how to install stock rom with twrp or how to remove twrp to go stock
i updated to latest twrp and tried to install cygon 13 i get error booloader unknown?
im on stock 5.1 how do i root?
kingroot is the DEVIL it rooted my phone but installed enough junkware to choke a horse, or a MT2 in this case so i reinstalled stock
i fastboot installed recovery it shows it installs it i calick fastboot reboot and try to get into the recovery i just installed and NOTHING i cant get in it
incase anyones wondering i unlocked the bootloader like first day i got it and it shows as "unlocked" so i think bootloader is still unlocked
Stickies in the general forum are your friend. There are a couple of posts in there that will explain how to get to stock ROM then install TWRP and use it to root.
Sent from my MT2L03 using XDA-Developers Legacy app
Hey, I've been using Kangvip rom for the Mate10Pro from this (https://forum.xda-developers.com/mate-10/help/kangvip-rom-t3738379)
It comes rooted with Supersu, and got TWRP up and running.
Now I thought of comming back to the stock version of the phone, and having a problem with that.
First my bootloader is unlocked and FRP is locked, Enable Oem unlocking in Devs Settings is off and greyed out, when trying to flash from the full OTA (from this website)
http://pro-teammt.ru/firmware-database/?firmware_model=bla-l29C432B129&firmware_page=0
Based on my Version BLA-l29C432B129
When I try to flash something, an error appears with Command not allowed, I read that I should relock the bootloader so I did try, but got the error " Root type is risk" so it didn't work.
Same problem in TWRP, everything is SDCARD is encrypted so I can't have a zip or boot image there.
Heard you could system upgrade with inbuilt huawei software, but only allows an external sd card :/
I'd just want to return to stock firmware , stock recovery and unrooted
I will provide as much information as I can!
Kind Regards Felipe
How i can root lolipop stock ROM of lenovo tab 2 a7-10f ?
I have tried kingroot and much more methods, but doesnt support.
I heard people say that lolipop version cant be rooted, just kitkat version which is first ROM. Lolipop is OTA upgrade from Lenovo.
I dont want to flash ROM, i want to use some tools which are available throught root.
I have tried flashing TWRP throught unlocked bootloader (fastboot), when i run command:
fastboot flash recovery c:\twrp.img
It says, done.
But i cant eneter recovery, and i flashed it multiple times, and it says it flashed fine.
But when i use key combination i enter in stock recovery.
And i tried diffrent command (i didnt know that command is bad idea)
fastboot flash boot c:\twrp.img
And i stucked in twrp recovery, it coudnt boot in normal system, because i changed what android should boot.
I extracted from stock ROM, boot.img and flashed it only in fastboot.
And booted normaly, but when i run on recovery, i saw i deleted it's stock recovery.
I was freaked, and i didnt touched anything anymore, i lost stock recovery but i dont care, i care that tab is still alive.
I'm not able to flash anything in any other way that fastboot which is quite scary to use if tab is working good (i dont want to break if something works)
How i can root it.
I have knowledge of adb commands but with all that knowledge i didnt managed to get root to this device, it looks like it's locked in that way.
Lolipop is best, it is very good and accesibile, and i just want to tweak it more with some xposed modules and apps that support root.