Develop Bugs

lenovo vibe shot z90a40 unlock bootloader problem, rooting. android 5.1.1

have vibe shot z90a40. android 5.1.1
1.i tried to root with kingroot, kingoroot, iroot etc, didnt work.
2. cannot unlock bootloader. when tried minimal adb and fastboot cannot reach bootloader or start in fastboot. when i use 'adb fastboot-bootloader' it hangs on the logo on restarting.
Although 'adb fastboot recovery' command works.
3, Tried vol down +power. it takes phone to service menu something (0 to 14 0. Board test 1. Current Test 2. RF test etc)
i have enabled developer options OEM UNLOCK AND USB DEBUGGING (maybe oem unlock feature isnt working, i read somewhere)
Actually i am trying to flash with another rom S363 marshmallow (internatinal rom for this phone only).
i want to backup my present rom so i want root and twrp.
i read steps of flashing on the forum WITHOUT UNLOCK i suppose with QFIL.
Dont want to take risk of bricking without unlock.
plz tell me how to unlock bootloader, custom recovery install and root as nothing else works.
please help me.

How to install Hydrogen OS?

I've got a completely stock 5t that's running the last OTA (I believe it's 5.03). I'm interested in trying the Hydrogen OS variant, but wasn't able to flash the official ROM. I followed the instructions on OnePlus' website how to do it (tried both installing from stock recovery & the update installer), but the update failed.
Any suggestions? I thought if I was just switching from Oxygen OS -> Hydrogen OS I could update it from stock recovery, but it doesn't seem to be working.

1. Download HydrogenOS from http://www.h2os.com/download
2. Use TWRP to load it, see https://dl.twrp.me/dumpling/ for the 5T.
On your device, go into Settings -> About and find the Build Number and tap on it 7 times to enable developer settings. Press back and go into Developer Options and enable USB debugging.
Code:
adb reboot bootloader
fastboot oem unlock
fastboot flash recovery twrp.img
volume/power keys to boot into recovery mode

ClinicalTrack said:
1. Download HydrogenOS from http://www.h2os.com/download
2. Use TWRP to load it, see https://dl.twrp.me/dumpling/ for the 5T.
On your device, go into Settings -> About and find the Build Number and tap on it 7 times to enable developer settings. Press back and go into Developer Options and enable USB debugging.
Code:
adb reboot bootloader
fastboot oem unlock
fastboot flash recovery twrp.img
volume/power keys to boot into recovery mode
Click to expand...
Click to collapse
Oh, I didn't think I had to do all that since Hydrogen OS is a stock OS.
Thanks for the codes. Now, let's say I wanted OTA Hydrogen updates. It wouldn't work because the bootloader is unlocked, correct? So I'd basically do everything in reverse, such as 'fastboot oem lock' ? And flash the stock recovery? Speaking of which, how would one download the stock recovery -- I couldn't find a direct link to it.
Also, it's been awhile since I've paid attention to the android development stuff -- unlocking a bootloader will still allow me to encrypt the phone, so thieves can't access the data, correct?

Listerine said:
Now, let's say I wanted OTA Hydrogen updates.
Click to expand...
Click to collapse
I left my bootloader unlocked, and still received HydrogenOS OTA updates. It was quite annoying, actually.
Listerine said:
Unlocking a bootloader will still allow me to encrypt the phone, so thieves can't access the data, correct?
Click to expand...
Click to collapse
My phone was unlocked but fully encrypted. If you're worried about thieves, please consider putting a PIN on your SIM, thieves don't even need access to your device to use 2FA on your online accounts and take them over.

sofrbrick/bootloop

Hi all,
I am new to this forum, but have some experience with rooting and custom roms(oneplus one and samsung)
Now with the Mi Max 3, which was unlocked, i have flashed the recovery twrp-3.2.3-0-nitrogen.img, but I did not realize that
i had to reboot into this recovery from the fastboot mode.
so I endet up with a locked bootloader and bottloop and am not able to unlock the bootloader again.
I think my only solution is the test-point method and a EDL authorized account.
Some help would be greatly appreciated.
thanks
Henry

You don't have to boot into the bootloader from fastboot mode, you can press the power button and volume up button like on almost all other Android phones to boot into TWRP recovery. Sometimes it takes a few attempts to get right, but you should learn how to do it eventually.
Unfortunately it sounds like you had one of the dodgy re-sold Chinese models that had been re-flashed with Global firmware and it's locked your bootloader again on reboot.
Your only option is to use the official Miui Flash tool to boot into fastboot mode, flash the latest Global Developer ROM, and then sign in with your account and apply to unlock the bootloader again using the Miui unlock program. It may be instant but, they'll probably make you wait 720 hours, as the entire point of the program was to stop phones like yours being re-sold outside China.
At least you'll have a usable, non-bricked device though.

Thanks for your answer.
now I have opened the backcover (yes was much work ( I succeded without destroying something) and could apply the test point method to get into the lde mode.
Win10 shows it as qualcomxx at com 3
what is the best way now to awake it to life again? even without unlocking.

hi,
with the test point method I could flash the chinese rom, and the mi max 3 is awaken to life again!
The bootloader is still locked.
I have applied for unlocking, but have to wait some 15 days.
One tip: if the case is open, one can apply a little bit of silicon grease to the small pins on the side of the plastic frame
before closing it. Opening it again is much easier then.
One question: if I replace the recovery.img of the chinese rom with a TWRP image (renamed to recovery.img)
and flash that modified rom with the test point method, could this probaly work?
With a working TWRP one could install other roms without unlocking bootloader.
If yes, which TWRP would you apply?
Thanks

freedoc said:
Hi all,
I am new to this forum, but have some experience with rooting and custom roms(oneplus one and samsung)
Now with the Mi Max 3, which was unlocked, i have flashed the recovery twrp-3.2.3-0-nitrogen.img, but I did not realize that
i had to reboot into this recovery from the fastboot mode.
so I endet up with a locked bootloader and bottloop and am not able to unlock the bootloader again.
I think my only solution is the test-point method and a EDL authorized account.
Some help would be greatly appreciated.
thanks
Henry
Click to expand...
Click to collapse
Flashing a recovery should not lock your bootloader, so I don't know how you did it. Note, that if you are using Xiaomi's firmware tool, you should not forget about unticking the box to lock the bootloader. But I would suggest to stay away from that tool and go command line instead with fastboot.
If you can access fastboot, I'd recommend to flash an official fastboot tgz ROM of your choice. Official ROM should boot even with an unlocked bootloader and you may start all over again more carefully.
So I think you might be able to avoid using EDL mode at this stage.

probally I forgot to untick that box. The bootloader is locked and I have to wait 319 hours.
I have got to love the test point EDL method which is simple and effective, and gave me control over the device again.
If I flash again the chinese fastboot rom (in which I have changed the original recovery.img into TWRP.img, named recovery.img) via the EDL
will that give me an installt TWRP (still with locked bootloader, but possible to install custom roms) or will i have a brick again?
thanks

freedoc said:
probally I forgot to untick that box. The bootloader is locked and I have to wait 319 hours.
I have got to love the test point EDL method which is simple and effective, and gave me control over the device again.
If I flash again the chinese fastboot rom (in which I have changed the original recovery.img into TWRP.img, named recovery.img) via the EDL
will that give me an installt TWRP (still with locked bootloader, but possible to install custom roms) or will i have a brick again?
thanks
Click to expand...
Click to collapse
Only you can answer that question by trying it out. Are you sure you have to wait for the unlocking again? Double check that! As I know you also need a priviliged xiaomi account to be able to resurrect a device in EDL mode.

Need help unlocking my Note 4

Hello,
I have a Sprint Galaxy Note 4 I'd like to unlock. I called sprint and got the unlocking code. I was to wait 72 hours for the phone to be fully unlocked. Then, I needed to swap my sprint SIM with a different network SIM, and the phone would prompt me to enter the code, and that would be it. Unfortunately, I received an email with the following message:
Letting you know your CPO SAM N910 WHT SNGL on line XXXXXXXXXX cannot be
unlocked due to programming restrictions associated with phones like
yours that were manufactured before February, 2015. You can try
providing your master subsidy lock (MSL) code XXXXXX to your new
carrier to find out if it will work on their network.
Keep in mind we can't guarantee your older phone will operate correctly
on another carrier's network. Each wireless provider determines whether
or not they will utilize the MSL code to reprogram a phone for use on
their network.
Click to expand...
Click to collapse
I put a different SIM in my phone, boot it up, and I get an invalid SIM error, but the phone does not prompt me to enter a code.
I have read and seen multiple Note 4, including the Sprint variant, being unlocked. Does anyone know what I need to do to unlock it?
Thanks

Aloupha said:
Hello,
I have a Sprint Galaxy Note 4 I'd like to unlock. I called sprint and got the unlocking code. I was to wait 72 hours for the phone to be fully unlocked. Then, I needed to swap my sprint SIM with a different network SIM, and the phone would prompt me to enter the code, and that would be it. Unfortunately, I received an email with the following message:
I put a different SIM in my phone, boot it up, and I get an invalid SIM error, but the phone does not prompt me to enter a code.
I have read and seen multiple Note 4, including the Sprint variant, being unlocked. Does anyone know what I need to do to unlock it?
Thanks
Click to expand...
Click to collapse
Use this tool to permanently unlock your device.
Download link for tool is in video description.
Screw the carrier
By this tool you can unlock all Samsung sprint devices.
https://youtu.be/tkrI7PTaZqA
Tool is free but watch carefully and follow instructions exactly as shown in video.
Let me know if it worked for you.

Trex888 said:
Use this tool to permanently unlock your device.
Download link for tool is in video description.
Screw the carrier
By this tool you can unlock all Samsung sprint devices.
https://youtu.be/tkrI7PTaZqA
Tool is free but watch carefully and follow instructions exactly as shown in video.
Let me know if it worked for you.
Click to expand...
Click to collapse
Thanks - it's kind of hard to follow the instructions. It's unclear what he is doing.
It would appears that you first place the phone in download mode. In his instruction, he attempted to do that, but the phone rebooted. Is this a necessary step? Then he put the phone in recovery mode. But after that, he doesn't show you want happens. He simply moves on to unlocking a different phone. Is simply putting the phone in recovery mode unlock it? I doubt it... do I click on the Unlock button while in download mode to unlock it? It's not clear

Aloupha said:
Thanks - it's kind of hard to follow the instructions. It's unclear what he is doing.
It would appears that you first place the phone in download mode. In his instruction, he attempted to do that, but the phone rebooted. Is this a necessary step? Then he put the phone in recovery mode. But after that, he doesn't show you want happens. He simply moves on to unlocking a different phone. Is simply putting the phone in recovery mode unlock it? I doubt it... do I click on the Unlock button while in download mode to unlock it? It's not clear
Click to expand...
Click to collapse
Follow these steps exactly
Before you begin you must have samsung usb drivers installed in your windows pc.
1 download cdma yemen tool that i mentioned in my earlier replies.
2 put your phone in adb mode by dialing ##3424# and choose adb+dm (very important)
3 reboot device
4 open tool and connect your device via usb cable (WATCH OUT CAREFULLY FOR ANY POP UP WINDOW ON YOUR PHONE YOU MUST ALLOW PERMISSION TO CONNECT DEVICE WITH TOOL.
5 inside tool click on port/adb and select your device.
6 choose your correct model N910P of you have Note 4 sprint.
6 click UNLOCK TAB in tool and wait until your device will reboot automatically.
thats it.
After reboot hopefully you have permanently unlocked device.
If your device successfully unlocked then dial ##3424# and select mtp+adb back to normal.
The guy is showing in video all the stuff that this tool can do so dont go to download mode or recovery or anything because that's for removing frp lock and other stuff.
Let me know if it worked for you.
By the way if you are on latest QI5 firmware i am not 100% sure this tool will work because QI5 has latest bootloader/modem and it's not easy to unlock.
If this tool did not work for you let me know i have workaround.
Good luck

Trex888 said:
Follow these steps exactly
Before you begin you must have samsung usb drivers installed in your windows pc.
1 download cdma yemen tool that i mentioned in my earlier replies.
2 put your phone in adb mode by dialing ##3424# and choose adb+dm (very important)
3 reboot device
4 open tool and connect your device via usb cable (WATCH OUT CAREFULLY FOR ANY POP UP WINDOW ON YOUR PHONE YOU MUST ALLOW PERMISSION TO CONNECT DEVICE WITH TOOL.
5 inside tool click on port/adb and select your device.
6 choose your correct model N910P of you have Note 4 sprint.
6 click UNLOCK TAB in tool and wait until your device will reboot automatically.
thats it.
After reboot hopefully you have permanently unlocked device.
If your device successfully unlocked then dial ##3424# and select mtp+adb back to normal.
The guy is showing in video all the stuff that this tool can do so dont go to download mode or recovery or anything because that's for removing frp lock and other stuff.
Let me know if it worked for you.
By the way if you are on latest QI5 firmware i am not 100% sure this tool will work because QI5 has latest bootloader/modem and it's not easy to unlock.
If this tool did not work for you let me know i have workaround.
Good luck
Click to expand...
Click to collapse
I am on QI5, and I didn't see a adb+dm option. I did see a DM + MODEM + ADM option under QUALCOMM USB SETTING (see attached screenshot), so I selected that.
The tool says Unlock Done With out Root... but it doesn't appear that the phone was indeed unlocked.
What's the workaround you have?

Aloupha said:
I am on QI5, and I didn't see a adb+dm option. I did see a DM + MODEM + ADM option under QUALCOMM USB SETTING (see attached screenshot), so I selected that.
The tool says Unlock Done With out Root... but it doesn't appear that the phone was indeed unlocked.
What's the workaround you have?
Click to expand...
Click to collapse
Yes DM+MODEM+ADM i was meaning.
The workaround i have is you have to flash Twrp RECOVERY and have to flash "ENG ROM" DONT FLASH ENG BOOTLOADER OR BASEBAND YOU WILL END UP UNKNOWN BASEBAND AND NULL IMEI.
Flash the rom from twrp and Also you have to flash supersu.zip to get full root with eng rom.
after that you have to use tool "Z3X SAMSUNG TOOLS PRO v27 or higher"
I cant share links here on xda for z3x because its heavily paid tool but if you search on youtube "z3x pro cracked" you will get 100s of videos with links to download.
HERE IS THE LINK FOR ENG ROM BY @freeza thanks to him.
https://forum.xda-developers.com/no...leakmm-sm-n910p-touchwiz-marshmallow-t3327350
After flashing eng rom the rom will take 35 minutes to boot so be patient and wait and also make sure battery is fully charged.
After that enable DM+MODEM+ADM as i mentioned earlier and you can unlock from z3x domestic use for american sim or unlock for international sim use.
Once phone is unlocked you must have to flash QI5 stock firmware via odin and do factory reset from stock recovery and dont worry the unlocking will stick permanently.
I personally did this method on QI5 ON my own device and it worked just fine.
I REPEAT DO NOT FLASH ENG BOOTLOADER OR MODEM OTHERWISE YOU WILL SCREW YOUR DEVICE COMPLETELY.
Cant explain more you got the idea i guess...
Good luck.

Trex888 said:
Yes DM+MODEM+ADM i was meaning.
The workaround i have is you have to flash Twrp RECOVERY and have to flash "ENG ROM" DONT FLASH ENG BOOTLOADER OR BASEBAND YOU WILL END UP UNKNOWN BASEBAND AND NULL IMEI.
Flash the rom from twrp and Also you have to flash supersu.zip to get full root with eng rom.
after that you have to use tool "Z3X SAMSUNG TOOLS PRO v27 or higher"
I cant share links here on xda for z3x because its heavily paid tool but if you search on youtube "z3x pro cracked" you will get 100s of videos with links to download.
HERE IS THE LINK FOR ENG ROM BY @freeza thanks to him.
https://forum.xda-developers.com/no...leakmm-sm-n910p-touchwiz-marshmallow-t3327350
After flashing eng rom the rom will take 35 minutes to boot so be patient and wait and also make sure battery is fully charged.
After that enable DM+MODEM+ADM as i mentioned earlier and you can unlock from z3x domestic use for american sim or unlock for international sim use.
Once phone is unlocked you must have to flash QI5 stock firmware via odin and do factory reset from stock recovery and dont worry the unlocking will stick permanently.
I personally did this method on QI5 ON my own device and it worked just fine.
I REPEAT DO NOT FLASH ENG BOOTLOADER OR MODEM OTHERWISE YOU WILL SCREW YOUR DEVICE COMPLETELY.
Cant explain more you got the idea i guess...
Good luck.
Click to expand...
Click to collapse
The URL for the ROM is dead. Do you by any chance have alternate URL?

Aloupha said:
The URL for the ROM is dead. Do you by any chance have alternate URL?
Click to expand...
Click to collapse
Here
https://mega.nz/#!vQ9VDJIS!Gv85h3Y3K44ym9BlRvNvJEfkiXHfO__AbJHElZycUnY
Btw try first the cdma yemen tool to.unlock with this rom with root. Maybe it can work.

It appears that I am not able to install TWRP... I install it via Odin from AP, and the install is successful. But when I try to boot into recovery, I get the stock recovery....
I tried TWRP 3.1.1 and 3.2.3... same thing. What am I not doing?

Aloupha said:
It appears that I am not able to install TWRP... I install it via Odin from AP, and the install is successful. But when I try to boot into recovery, I get the stock recovery....
I tried TWRP 3.1.1 and 3.2.3... same thing. What am I not doing?
Click to expand...
Click to collapse
Open odin and uncheck auto reboot in odin options
Choose AP and flash twrp
After Odin shows pass remove battery
Insert battery and Boot straight into twrp by volume up+home+ power
If your phone reboots after flashing twrp the system overwrites the stock recovery over twrp thats why you are losing twrp so do not reboot system after flashing twrp.
Once you booted into twrp then if will stick permanently and stock recovery will never show up.
If i was helpful then consider hit thumbs up on my replies.

Thanks! It took a while with multiple flashes, but I think it is fully unlocked now. I am able to put a Verizon SIM card in it and get no sim card error message.

Aloupha said:
Thanks! It took a while with multiple flashes, but I think it is fully unlocked now. I am able to put a Verizon SIM card in it and get no sim card error message.
Click to expand...
Click to collapse
Put sim card in phone then
Try dial ##72786# and press yes
Phone should reboot then you should get reception and.no sim massage won't show up.

Usure if anyone still using this. But I just got my phone unlocc using it on crikket/att. Unsure why you got a 7 wait but I was able to make phones and use internet immediately after I unlocc the phone. The only problem I'm facing is being able to use 4g o the phone.

Zaiaku said:
Usure if anyone still using this. But I just got my phone unlocc using it on crikket/att. Unsure why you got a 7 wait but I was able to make phones and use internet immediately after I unlocc the phone. The only problem I'm facing is being able to use 4g o the phone.
Click to expand...
Click to collapse
You won't get 4g/lte because n910p sprint note 4 is CDMA model and you need GSM model for 4g on at&t/cricket.

Unlock bootloader, Install Custom Recovery and Lock Again?

Hi everyone,
Well my doubt it's really simple as you can see.
I tried to search on forum and internet, but I didn't found nothing solid.
Only achism (Incluing Mi official Forum)
It's really simple to Lock/Unlock the bootloader on Mi 5s, a simple command on promt and it's DONE. You lose nothing, no need to flash NOTHING.
I heard about bootloop, but does it real? Anyone here already tried it?
Why Am I asking it?
Well, if my bootloader is unlocked, I dunno why, but even with magisk Applications can detect some incoherence in my smartphone.
Even passing all steps of SafetyNet, the apps detect.
I think it's some flag on build.prop or another option available on MIUI Rom (and ofc they will read it to check everything).
My GF has magisk and custom recovery (Unlock Boot) and the same apps don't detect on her phone and works normally. (I configured both)
So I would like to know if it's really possible use a Custom Recovery and Magisk and just block the Bootloader again...

If you have the original bootloader from the original rom you can lock it. If you don't, the phone will stop booting with lock and custom bootloader.

patoberli said:
If you have the original bootloader from the original rom you can lock it. If you don't, the phone will stop booting with lock and custom bootloader.
Click to expand...
Click to collapse
No. Even using stock ROM after unlock bootloader and Install TWRP and lock again we got a message "the system has been destroyed" on Mi 5/5s/5x.
It's a Soft Brick, but if anyone on future want to try it and before do it, found this post so, stay away.

TWRP = different bootloader.

patoberli said:
TWRP = different bootloader.
Click to expand...
Click to collapse
Read the post again and if you don't understand, read again.
Thank you.