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bfldworker
Android Enthusiast
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bfldworker
Android Enthusiast
Here is the video I made showing Kingroot rooting the phone as well as TWRP and SuperSU.
It is running 4.4.4 Build B13
It is running 4.4.4 Build B13
malbectrees
Lurker
The trick for me was restarting my phone beforehand. Restart your phone and then immediately open KingRoot (don't do anything else) and try to root. It should work on the first try, however the temp root will only last for a couple minutes. At your own risk, flash TWRP 2.8.6.0 before root goes away using the apk file provided in the stickies (I read somewhere that flashing anything on a B13 phone is currently a risk, so beware). Then flash SuperSU through TWRP for permanent root.
EDIT: If your temp root went away before you could flash TWRP, you will need to restart your phone to temp root it again (which happened to me).
EDIT: If your temp root went away before you could flash TWRP, you will need to restart your phone to temp root it again (which happened to me).
bfldworker
Android Enthusiast
Weird. When I rooted it I didn't flash twrp for about 15 minutes. And the phone was running for over 4 hours
So I don't know what happen on your phone.
I got it to work, restarting the phone wasn't enough. I had to turn WiFi on, restart phone, use the task manager to clear cache and app data for king root, then I ran king root and was successful.
TWRP seems to work fine but flashing roms with it is a no no until someone works it out.
TWRP seems to work fine but flashing roms with it is a no no until someone works it out.
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bfldworker
Android Enthusiast
Actually flashing is simple.
Before you flash a ROM you need to downgrade the modem firmware to B06. And then flash the ROM of your choosing.
Here is the link to B06
https://www.androidfilehost.com/?fid=24269982086991464
Before you flash a ROM you need to downgrade the modem firmware to B06. And then flash the ROM of your choosing.
Here is the link to B06
https://www.androidfilehost.com/?fid=24269982086991464
malbectrees
Lurker
And how do you go about downgrading the modem firmware? Just flash the old B06 .zip?
bfldworker
Android Enthusiast
Yes. You need to flash the B06 modem Firmware if you have any plans on flashing a custom rom or you will not be able to make or receive calls or have a data connection outside of Wifi. If you drop back to Stock you must flash the B13 modem firmware. Here is the link for the B13 Modem firmware.
https://www.androidfilehost.com/?fid=24269982086991465
https://www.androidfilehost.com/?fid=24269982086991465
Is this confirmed to work?
bfldworker
Android Enthusiast
Yeah, I have it on my phone right now
bfldworker
Android Enthusiast
I already have it installed. All I had to do is flash the B06 modem firmware. Masterchief helped with that. Runs flawlessly.
dfuse06
Android Enthusiast
Okay! Well I'm still gonna update the vendor files
malbectrees
Lurker
Thanks! Just restored my Broken OS backup and flashed the B06 modem firmware afterwards, works perfectly. Question, is the modem firmware stored in a backup? Or will I have to flash B13 modem firmware after restoring one of my stock backups?
Masterchief87
Android Expert
The modem is stored on its own partition and is not backed up or restored by twrp. Whenever you go back to stock you have to flash the correct modem for your firmware version and if you are going to use a custom ROM you'll need to flash the older modem. You don't have to flash the modem again to switch ROMs though because all the ROMs use the same modem and it will persist between installs.
Ok, so let's say I want to go back to stock T-Mobile (B22) which modem would I need to flash? (I'm on AICP 5.1.1)
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Masterchief87
Android Expert
You would need the b22_modem that goes along with the b22 stock ROM. If you already flashed the b22 modem then you don't need to flash it again.