QPST flashing + VibeUI 3.1 S272 ROM + Unlock BL + TWRP + SuperSU + Region change

[kelly66]

Disable driver signature verification during boot in Windows 10. Then only Windows will allow you to install unsigned drivers. Also you will have to remain in windows 10 test mode during flashing process.

Sent from my Lenovo P1a42 using XDA-Developers Legacy app

I looked up the Internet and tried to disable driver signature verification as shown here:

http://www.howtogeek.com/167723/how...8.1-so-that-you-can-install-unsigned-drivers/

It said secure boot needs to be disabled, but I am unable to disable it for some reason. Should I change boot mode to Legacy instead of UEFI? Don't want to take any chances....

Found a way to disable (specific to ACER - has to set up a secure password first). Now on test mode, but device manager is still showing as ADB interface only.

Should I just right click and uninstall the driver software? How do I start afresh?

 

[Smarty_009]

I looked up the Internet and tried to disable driver signature verification as shown here:

http://www.howtogeek.com/167723/how...8.1-so-that-you-can-install-unsigned-drivers/

It said secure boot needs to be disabled, but I am unable to disable it for some reason. Should I change boot mode to Legacy instead of UEFI? Don't want to take any chances....

Found a way to disable (specific to ACER - has to set up a secure password first). Now on test mode, but device manager is still showing as ADB interface only.

Should I just right click and uninstall the driver software? How do I start afresh?

Post screen shot of device manager. What is in com ports.

Sent from my Lenovo P1a42 using XDA-Developers Legacy app

 

[kelly66]

Post screen shot of device manager. What is in com ports.

Sent from my Lenovo P1a42 using XDA-Developers Legacy app

I dont see any COM ports...

 

[Smarty_009]

I dont see any COM ports...

It seems Mobile is powered on while connecting..


Do you have adb installed.

If you are only looking to flash rom or root?

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[kelly66]

It seems Mobile is powered on while connecting..

- Would it not be charging when USB is connected?

Do you have adb installed.

- Don't think so? Do I have to? How do I check?

If you are only looking to flash rom or root?

- I only want to Unlock BL and Root for now.

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[Smarty_009]

Install adb then i will tell you command to unlock bootloader and root.

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---------- Post added at 05:00 PM ---------- Previous post was at 04:58 PM ----------

Or else no need to change uefi to legacy.... That is bios option and nothing to do with os...


You were on right guide I don't understand where did you get stuck to disable driver signature verification

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[kelly66]

Install adb then i will tell you command to unlock bootloader and root.

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---------- Post added at 05:00 PM ---------- Previous post was at 04:58 PM ----------

Or else no need to change uefi to legacy.... That is bios option and nothing to do with os...


You were on right guide I don't understand where did you get stuck to disable driver signature verification

Sent from my Lenovo P1a42 using XDA-Developers Legacy app

Great! Any easy way or quick link to install ADB?

 

[lucifero13]

If you are on twrp recovery try data wipe

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Cannot flash twrp since debugging is not abled

 

[Smarty_009]

Great! Any easy way or quick link to install ADB?

Adb is very small software only few mb in size. Commands and installation instructions on internet is available. Else I will make youtube video tomorrow evening.

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---------- Post added at 05:17 PM ---------- Previous post was at 05:14 PM ----------

Cannot flash twrp since debugging is not abled

You also can flash twrp from adb fastboot command.

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---------- Post added at 05:18 PM ---------- Previous post was at 05:17 PM ----------

But am not sure if debugging disabled will allow flashing from fastboot mode or not.

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[lucifero13]

Adb is very small software only few mb in size. Commands and installation instructions on internet is available. Else I will make youtube video tomorrow evening.

Sent from my Lenovo P1a42 using XDA-Developers Legacy app

---------- Post added at 05:17 PM ---------- Previous post was at 05:14 PM ----------


You also can flash twrp from adb fastboot command.

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---------- Post added at 05:18 PM ---------- Previous post was at 05:17 PM ----------

But am not sure if debugging disabled will allow flashing from fastboot mode or not.

Sent from my Lenovo P1a42 using XDA-Developers Legacy app

Tried it, did not succeed. Adb cannot detect my device. Tried wiping everything under the stock recovery but no luck

 

[Smarty_009]

Tried it, did not succeed. Adb cannot detect my device. Tried wiping everything under the stock recovery but no luck

I am not sure. I will try to simulate the problem and check what can be done. Give me 48 hours. Sorry bro

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[lucifero13]

I am not sure. I will try to simulate the problem and check what can be done. Give me 48 hours. Sorry bro

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Thanks my friend. Im thinking that the only way to pass FRP is by flashing custom rom. But without debugging on, I cannot flash the necessary things. Am still finding ways to brute my way in

 

[kelly66]

Adb is very small software only few mb in size. Commands and installation instructions on internet is available. Else I will make youtube video tomorrow evening.

Sent from my Lenovo P1a42 using XDA-Developers Legacy app

Located this link:

http://www.androidusbdrivers.com/lenovo-vibe-p1-usb-drivers/

but getting stuck.

Any video/guide will help, buddy. Take your time....

 

[Smarty_009]

Thanks my friend. Im thinking that the only way to pass FRP is by flashing custom rom. But without debugging on, I cannot flash the necessary things. Am still finding ways to brute my way in

Qfil will flash even when debugging mode is off. Qualcomm qd loader com port is to be detected. I will try for that video guide on window 10 also if I get time else try on Windows xp. It will work.

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[lucifero13]

Qfil will flash even when debugging mode is off. Qualcomm qd loader com port is to be detected. I will try for that video guide on window 10 also if I get time else try on Windows xp. It will work.

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Cant get past the 1st step where you prep everything. All I get is "unknown usb device" instead of lenovosomething on COM

 

[Smarty_009]

Cant get past the 1st step where you prep everything. All I get is "unknown usb device" instead of lenovosomething on COM

Did you try to disable driver signature enforcement. What was the exact problem.

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---------- Post added at 12:48 PM ---------- Previous post was at 12:48 PM ----------




https://forum.xda-developers.com/showthread.php?p=70565932



Bro this video is for you. Please like and comment if this helps. Also share and request more such videos of it helps anybody.
https://youtu.be/e6eprbeUfIs

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[lucifero13]

Did you try to disable driver signature enforcement. What was the exact problem.

Sent from my Lenovo P1a42 using XDA-Developers Legacy app

---------- Post added at 12:48 PM ---------- Previous post was at 12:48 PM ----------

A God-sent! Thanks!



https://forum.xda-developers.com/showthread.php?p=70565932



Bro this video is for you. Please like and comment if this helps. Also share and request more such videos of it helps anybody.
https://youtu.be/e6eprbeUfIs

Sent from my Lenovo P1a42 using XDA-Developers Legacy app

 

[Smarty_009]

1. You have to have Qualcomm drivers installed. I have checked on my windows 10 and even in driver signature on on mode it is detected even with debugging off.

2. While connecting your mobile at USB port it should be powered off and volume up button should be pressed. I. e. Press the volume up button while connecting to the USB port until it vibrates then release the volume up key. Then it is detected as Qualcomm device on com port.

Sent from my Lenovo P1a42 using XDA-Developers Legacy app

---------- Post added at 01:31 AM ---------- Previous post was at 01:31 AM ----------

1. You have to have Qualcomm drivers installed. I have checked on my windows 10 and even in driver signature on on mode it is detected even with debugging off. <br />
<br />
2. While connecting your mobile at USB port it should be powered off and volume up button should be pressed. I. e. Press the volume up button while connecting to the USB port until it vibrates then release the volume up key. Then it is detected as Qualcomm device on com port. <br />
<br />
Sent from my Lenovo P1a42 using XDA-Developers Legacy app

Sent from my Lenovo P1a42 using XDA-Developers Legacy app

 

[kelly66]

1. You have to have Qualcomm drivers installed. I have checked on my windows 10 and even in driver signature on on mode it is detected even with debugging off.

2. While connecting your mobile at USB port it should be powered off and volume up button should be pressed. I. e. Press the volume up button while connecting to the USB port until it vibrates then release the volume up key. Then it is detected as Qualcomm device on com port.

Sent from my Lenovo P1a42 using XDA-Developers Legacy app

---------- Post added at 01:31 AM ---------- Previous post was at 01:31 AM ----------

1. You have to have Qualcomm drivers installed. I have checked on my windows 10 and even in driver signature on on mode it is detected even with debugging off. <br />
<br />
2. While connecting your mobile at USB port it should be powered off and volume up button should be pressed. I. e. Press the volume up button while connecting to the USB port until it vibrates then release the volume up key. Then it is detected as Qualcomm device on com port. <br />
<br />
Sent from my Lenovo P1a42 using XDA-Developers Legacy app

Sent from my Lenovo P1a42 using XDA-Developers Legacy app

Smarty_009, thanks for the video and the above suggestion after which I am able to see the Qualcomm device under COM port. So, which method do you recommend for rooting and getting TWRP recovery. I might flash CM ROM later if gets stable.
Did you see benefits after rooting? Other than installing some root based apps like XPOSED, Greenfiy (root mode), etc, are any other mods that we can do?

Also, I would like to have the option of going back to Stock ROM later if the Lenovo comes with any further upgrade or Nougat.

Pl suggest.

 

[Smarty_009]

1. You have to have Qualcomm drivers installed. I have checked on my windows 10 and even in driver signature on on mode it is detected even with debugging off.

2. While connecting your mobile at USB port it should be powered off and volume up button should be pressed. I. e. Press the volume up button while connecting to the USB port until it vibrates then release the volume up key. Then it is detected as Qualcomm device on com port.

Sent from my Lenovo P1a42 using XDA-Developers Legacy app

---------- Post added at 01:31 AM ---------- Previous post was at 01:31 AM ----------



Smarty_009, thanks for the video and the above suggestion after which I am able to see the Qualcomm device under COM port. So, which method do you recommend for rooting and getting TWRP recovery. I might flash CM ROM later if gets stable.
Did you see benefits after rooting? Other than installing some root based apps like XPOSED, Greenfiy (root mode), etc, are any other mods that we can do?

Also, I would like to have the option of going back to Stock ROM later if the Lenovo comes with any further upgrade or Nougat.

Pl suggest.

Method 1: As shown in the video using adb command.

Method 2: using Qfil app and flashing boot unlock and twrp.

Method 2 is much easier and faster for first time attempting because bootloader unlock will be done automatically. It is recommendable.

With xposed and greenify definitely there is improvement. You may choose to lower clock speed to save battery life in case you are not resource hungry all the time. Rooting won't affect as both stock and rooted stock are equally good.

CM rom is not yet that good but be rest assured I have flashed old stock rom more than 20 times in past 1yr and still no problems. So you can come back on unrooted stock rom whenever you desire in just few clicks.

If my video helps please share, like and subscribe on youtube. Please put requests for other guides related to anything that I will try to post.

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