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[Tutorial][How to] Unlock Bootloader and Install Custom Recovery and Root

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By stirredo, Member on 4th October 2014, 07:16 PM
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Hello,

I know there are some tutorials for this already but I felt like they missed out a few steps that might not be obvious to some who are new to this.

This tutorial applies to all of Android One Device (Micromax Canvas A1, Karbonn Sparkle V Blue, Spice Mi-498 Dream Uno).


Unlocking bootloader will lead to formating of your phone. The stuff inside your sd card is safe but all your apps and their data will be deleted.



Unlocking bootloader:

1. Download Universal ADB Driver installer from here.
2. Connect your phone and run the Universal ADB Driver installer. Click 'Install' button and a warning should pop up. Just click "Install anyway" and it should look like this:


3. Download ADT Bundle from here for Win-32 Bit and from here for 64-Bit . If you are unsure which version of windows you have just download the 32-Bit one.

4. Extract the zip file in your C:\ drive like this (You can install it wherever you like but this tutorials assumes this location for simplicity). Add adb and fastboot to system path by following this tutorial . This will allow you to run adb and fastboot commands from any location on cmdline.


3. Switch off your phone. Now, Press POWER BUTTON + VOLUME UP button for about 5 seconds. A menu should appear. Note: VOLUME UP allows to navigate the menu (move down the menu). Press VOLUME DOWN button for selecting/choosing fastboot. On your phone, it should say something like
Code:
=> FASTBOOT MODE...
Connect your phone to the computer if it wasn't already.

4. (Assuming Win 7) Click on start menu > Search for 'Command Prompt' and right click and select 'Run as Administrator'.


5. On command prompt, Type:
Code:
fastboot devices
If it shows something, that means we can proceed to unlocking bootloader. Otherwise, it means that the driver was not installed correctly.


6. Now, Type the following commands:
Code:
fastboot oem unlock
fastboot format userdata
fastboot reboot
Now, your bootloader is unlocked.

Install a custom recovery.

1. Download custom recovery from this thread.

2. Place the download file, 'recovery.img' file in C:\ drive. (Again, you can place it anywhere but this tutorial assumes this path).

3. Run the following command (Assuming already in fastboot mode again. If not, follow the above steps to go to fastboot mode). :
Code:
fastboot flash recovery c:\recovery.img
After doing so, it should look like this:


4. Reboot your phone and you are done by typing:
Code:
fastboot reboot

Now, you have installed CWM custom recovery. On to installing root.

Rooting your phone:

1. After installing custom recovery, download Super-Su .zip file.

2. Place the .zip file on your sd-card. If your computer doesn't show your phone as MTP device, download the drivers from here.

3. Boot into recovery, by pressing POWER OFF + Volume UP button for 5 secs and choosing Recovery by pressing Volume Down (NOTE: Use Volume UP for menu navigation)

4. After booting into recovery, Choose 'Install Zip'. You can use Volume UP and Volume Down for navigating here and Power Off button for selecting a menu item.

5. Now, select 'choose zip from /external_sd' and not '/sdcard'

6. Select the Super-Su zip file you placed on your sd card and install it.

Now, Reboot your phone. It might say something like 'su may have been removed' but ignore and press 'No'.

Tutorial Complete

Let me know if there are any errors in this Tutorial.
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5th October 2014, 03:59 AM |#2  
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Hi, thanks for the tutorial. Can you explain the necessity for using "fastboot format userdata" given "oem unlock" command in addition to unlocking the bootloader clears user data.
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5th October 2014, 11:36 AM |#3  
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Quote:
Originally Posted by littleromeo

Hi, thanks for the tutorial. Can you explain the necessity for using "fastboot format userdata" given "oem unlock" command in addition to unlocking the bootloader clears user data.

Someone in this thread reported that they got stuck on the recovery, meaning the phone boot normally.

The port maker for recovery for our phone mentioned formatting userdata command in his post, so I did the same. I didn't want newbies to experience any trouble.
6th October 2014, 06:36 AM |#4  
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nice guide ..
but I guess "add adb and fastboot to system path " shall be made optional .. this will make guide little simpler and shorter ..
7th October 2014, 08:20 AM |#5  
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Hey
Can anybody please insure any android device that has been successfully rooted by this method ? Also is waiting for towelroot worth it ??
7th October 2014, 09:14 PM |#6  
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Wink
Quote:
Originally Posted by tanuj123

Can anybody please insure any android device that has been successfully rooted by this method ? Also is waiting for towelroot worth it ??

I have used this method myself, but I am also the OP so....
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17th April 2015, 01:29 PM |#7  
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Iam in a weird situation , I did flash many times before but I dont know how it made my device like this ... THE PROBLEM IS WITH DRIVERS and also SDcard

First I unlocked my bootloader then flashed cm11 on it ( Which was on lollipop official) and I forgot to download gapps so in connected my phone to pc only to find my computer doesnt recognise my phone it make sound but nothing shows up I tried clicking MTP again and again but nothing happens , WHEN I TRIED ADB it shows no devices in the list , I took out the sd card to copy files manually and the sd card says its write protected ..... GUYS HELP @stirredo
17th April 2015, 01:53 PM |#8  
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What are you using to read your SD card on your computer?

If you are using SD card adapter, make the sure write lock is turned off.

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18th April 2015, 04:08 AM |#9  
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Man thankyou but After installing the driver you gave my phone gets detected by pc but only when I turn on usb debugging @stirredo
Sent from my Xperia P using XDA Free mobile app
18th April 2015, 11:54 AM |#10  
Saurabh K's Avatar
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Quote:
Originally Posted by Kaushik124

Man thankyou but After installing the driver you gave my phone gets detected by pc but only when I turn on usb debugging
Sent from my Xperia P using XDA Free mobile app

That is the same issue faced by me .
24th April 2015, 04:23 PM |#11  
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Quote:
Originally Posted by Saurabh K

That is the same issue faced by me .

Did you find any solution

Sent from my Xperia P using XDA Free mobile app
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