[ZENFONE] [TUTORIAL] Best way to unlock your bootloader safely

[n3g4o]

So you have screen freeze issue after unlocking bootloader .
You cannot lock bootloader while using custom rom that uses custom kernel .. if you do so your phone won't boot.
Now you can stay with your screen freeze issue and have custom rom or lock the bootloader and get back to stock rom or any custom rom that uses stock kernel .

Hello Boomshiva! so... i'm with the frankenstain version of the z5, and offcourse my phone has the freeze issue. I do not know if there are over there custom roms with stock kernel, BUT it's posible to work? i readed not all offcourse, but alot of the forum about this, and is the first time that i read what you say. I even know if open a door to peolpe that has franki's z5, but it gives me strengh to keep reading and searching. It is like that?

Thanks.

 

[Boomshiva]

Hello Boomshiva! so... i'm with the frankenstain version of the z5, and offcourse my phone has the freeze issue. I do not know if there are over there custom roms with stock kernel, BUT it's posible to work? i readed not all offcourse, but alot of the forum about this, and is the first time that i read what you say. I even know if open a door to peolpe that has franki's z5, but it gives me strengh to keep reading and searching. It is like that?

Thanks.

Hello there , i dont understand you properly ....But as per my understanding..
-You have freeze issue
-You read alot about that issue and found no solution
-You cannot use custom rom
Is the interpretation correct ?
So now i would like to answer you
-Many users are facing issue that is due to faulty bootloaders
-there is no specific method /solution as different phones were shipped by asus with same phone model number .
-You can use custom roms that uses stock kernel
But unfortunately there are only 1/2 custom roms like that .
Link : aosp 5.0.2 by Leonardo
Link : aosp by tank

 

[n3g4o]

Hello there , i dont understand you properly ....But as per my understanding..
-You have freeze issue
-You read alot about that issue and found no solution
-You cannot use custom rom
Is the interpretation correct ?
So now i would like to answer you
-Many users are facing issue that is due to faulty bootloaders
-there is no specific method /solution as different phones were shipped by asus with same phone model number .
-You can use custom roms that uses stock kernel
But unfortunately there are only 1/2 custom roms like that .
Link : aosp 5.0.2 by Leonardo
Link : aosp by tank

Hi Boomshiva!

Yes, you understand perfectly. And i missed those 2 roms you mention, i'll try it. Thank you for the news, i think there was nothing to try except stock rom. 2 tries is better than none.

Thank you.

 

[flatex]

Works on KK?

 

[juyel92]

Works on KK?

I have tested this on latest version of lollipop stock ROM. I don't know whether it will work on kitkat or not.
You can try this on your kitkat stock ROM and share your results here.

 

[helmkeren]

how i know that i have completely unlock BL and install TWRP ? seems like I didnt see any changes. my recovery doesnt change to TWRP ?

 

[juyel92]

how i know that i have completely unlock BL and install TWRP ? seems like I didnt see any changes. my recovery doesnt change to TWRP ?

If you have selected the option of "unlock bootloder + install twrp" from the tool then when you reboot to recovery, twrp recovery will be open instead of stock recovery.
But if you are not getting twrp recovery that means you have done something wrong. Please retry it again.
Otherwise, you can just select unlock bootloader option from the tool which will only unlock your bootloader. And then manually flash the twrp.

 

[helmkeren]

If you have selected the option of "unlock bootloder + install twrp" from the tool then when you reboot to recovery, twrp recovery will be open instead of stock recovery.
But if you are not getting twrp recovery that means you have done something wrong. Please retry it again.
Otherwise, you can just select unlock bootloader option from the tool which will only unlock your bootloader. And then manually flash the twrp.

i already flash unlock bootloader+TWRP but my recovery still the same. if i unlock BL, what are the chenges i'll see ? where i can get link of TWRP ? thanks. sorry for my bad english.

 

[ghst7]

Hey guys I'm little lost could anyone help me understanding the process is been a while since i first done something like this from stock

Here's the deal, my mom got a zenfone 5 T00J and I want to install a custom ROM to improve her phone experience but the question is, do I still need to root her device first or can I simply just follow this thread and unlock bootloader +install Twrp+install some custom ROM(probably AICP)?
Any help is much appreciated

Sent from my Xperia SP using XDA Labs

 

[juyel92]

i already flash unlock bootloader+TWRP but my recovery still the same. if i unlock BL, what are the chenges i'll see ? where i can get link of TWRP ? thanks. sorry for my bad english.

There is nothing changes will appear if you unlocked the bootloader.
If you are getting the problem then just use "unlock bootloader" option from the tool. After it says successful then manually flash the twrp recovery.

For getting twrp, just open the "unlock bootloader tool folder" which you have downloaded from the main post in your PC. Open the folder and there you will find "files folder". Double click the file folder and there you will a file with name " TWRP-3.0.M2-0.img" just copy this file and paste it in your desktop.
Now connect your phone to PC. Enable USB debugging.
Open cmd window in your PC.
And type -
adb devices
(Hit enter)

If your device is listed there then proceed forward.
Now type -
adb reboot bootloader
(Hit enter)

When your device is in bootloader mode now type -
fastboot flash recovery TWRP-3.0.M2-0.img
(Hit enter)

After flashing the recovery type -
fastboot reboot-bootloader
(Hit enter)

Then type-
fastboot reboot

 

[juyel92]

Hey guys I'm little lost could anyone help me understanding the process is been a while since i first done something like this from stock

Here's the deal, my mom got a zenfone 5 T00J and I want to install a custom ROM to improve her phone experience but the question is, do I still need to root her device first or can I simply just follow this thread and unlock bootloader +install Twrp+install some custom ROM(probably AICP)?
Any help is much appreciated

You can unlock the bootloader without rooting your device. Rooting is not necessary here. Just follow the steps properly.

 

[helmkeren]

There is nothing changes will appear if you unlocked the bootloader.
If you are getting the problem then just use "unlock bootloader" option from the tool. After it says successful then manually flash the twrp recovery.

For getting twrp, just open the "unlock bootloader tool folder" which you have downloaded from the main post in your PC. Open the folder and there you will find "files folder". Double click the file folder and there you will a file with name " TWRP-3.0.M2-0.img" just copy this file and paste it in your desktop.
Now connect your phone to PC. Enable USB debugging.
Open cmd window in your PC.
And type -
adb devices
(Hit enter)

If your device is listed there then proceed forward.
Now type -
adb reboot bootloader
(Hit enter)

When your device is in bootloader mode now type -
fastboot flash recovery TWRP-3.0.M2-0.img
(Hit enter)

After flashing the recovery type -
fastboot reboot-bootloader
(Hit enter)

Then type-
fastboot reboot

i tried to flash unlock BL only, seems fine. but when i tried to flash TWRP it said "cannot load TWRP-3.0.M2-0.img". now when i reboot my device it shows USB logo only and turned off by itself.

 

[juyel92]

i tried to flash unlock BL only, seems fine. but when i tried to flash TWRP it said "cannot load TWRP-3.0.M2-0.img". now when i reboot my device it shows USB logo only and turned off by itself.

Rename the file to just " twrp.img" and flash it again.

 

[ghst7]

@juyel92
Thanks man, I managed to unlock the bootloader and to install Twrp and AICP, so far without freezes and the camera works, again thanks for your effort. Best regards.

Sent from my Xperia SP using XDA Labs

 

[juyel92]

@juyel92
Thanks man, I managed to unlock the bootloader and to install Twrp and AICP, so far without freezes and the camera works, again thanks for your effort. Best regards.

I'm glad to hear that from you. Now enjoy all custom ROMs without any problems.
Kindly hit the *Thanks* button if it works for you.

 

[saurabh8263]

Will it work on indian version? I am running KITKAT.. there is no update of lollipop for my device...

 

[juyel92]

Will it work on indian version? I am running KITKAT.. there is no update of lollipop for my device...

Yes it will work on Indian versions. As my device is also Indian version phone.
And I don't know whether it will work on kitkat, as I have tested this on lollipop rom. So please kindly update your device to latest lollipop ROM (Version*WW_3.24.40.87(Andriod*L)) and then try this tool for unlocking bootloader.

Please visit this link below for downloading the Lollipop update manually -
https://www.asus.com/support/Download/39/1/0/2/96nqlxHp1VKV4Rdz/32/
Click on the above link then Go to Firmware options and search for "Version WW_3.24.40.87(Android L)" and download it.
After downloading, put the downloaded file in your internal storage (don't put it inside any folder). A notification will pop-up to start the system update (if it didn't pop-up then restart your device). Select the update and let the device do the update by itself . After successfully upgrading to lollipop, then download this unlocker tool, and then follow the steps for unlocking bootloader as well as installing TWRP.


NOTE : Please download the firmware as per as your device SKU.
Example - If your device has WW SKU, then select WW firmware. Like that,
WW => WW firmware
CN => CN firmware
TW => TW firmware

 

[lexpizarro]

#follow up question

Hey Juyel,

Ive been able to unlock the bootloader but does the installation of twrp have to be done separately? Ive tried booting to recovery but i get the same old stock recovery. its not booting to twrp 3 in case it was already installed. much help would really be appreciated.

 

[juyel92]

Hey Juyel,

Ive been able to unlock the bootloader but does the installation of twrp have to be done separately? Ive tried booting to recovery but i get the same old stock recovery. its not booting to twrp 3 in case it was already installed. much help would really be appreciated.

After unlocking the bootloader you have to flash the TWRP. However, you can use this tool to unlock bootloader as well as install the TWRP together in just one click.
In case, if you use this tool to unlock bootloader as well as install twrp together and then you are not getting the twrp recovery after rebooting to recovery then it is highly recommended to flash the twrp separately.
But remember, first unlock the bootloader then only you can flash the TWRP.

 

[bandoh weigel]

how to instal twrp without pc