Bootloader Unlock Tutorial for IN 1b (Android 10)

Unlock Bootloader and Explore new custom features on your IN 1b.
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Hey, IN 1b users!

How are you? We hope you all are good and having great fun with your smartphone. We have something important to share for unlocking the bootloader on your IN 1b. Finally, people who love to explore new custom features on their phones would be able to do the same on their IN 1b.

Please read the disclaimer carefully before proceeding with unlocking the bootloader on your device.


1. After unlocking your phone, ALL OF YOUR DATA WILL BE ERASED! Backup before you proceed.
2. Unlocking the Bootloader may have unforeseeable impacts on your phone.
3. Some functions may not operate properly because of third-party firmware- like the camera, audio functionality, etc. It can damage the device too.
4. Personal and confidential information on phone may get leaked and your privacy may get compromised.
5. Unlocking may modify some of the system functions and prevent you from updating the system version.

Pre-requisite for unlocking the Bootloader

1. IN 1b - with minimum charge level of 60%
2. 1 x USB C type Cable
3. 1 x PC/Mac Book

Procedure to unlock the Bootloader and flashing custom image

1. Make sure you have backed up your data, unlocking your phone will erase all your data.
2. Make sure your system is updated to the latest and official software version.
3. When device is switched on, Go to Settings -> About Phone -> Build Number (Tap this 7-times to enable Developer Options)
4. Connect the USB Cable.
5. Go to Settings -> Systems -> Developer Options -> USB Debugging -> Turn this on. (Refer below image) -> It will prompt for “Allow USB debugging?” -> press “Allow” Button.


6. Turn on OEM unlocking (Go to Settings -> Systems -> Developer Options -> OEM Unlocking (Turn this on) -> It will prompt with a pop up to “Allow OEM Unlocking” -> Press Enable button (Refer image below)


7. Download and install the fast boot tool on your PC or Mac Book (check this ... downloads/). After installing these tools:

- Enter the command: adb reboot Bootloader
- Press “Enter” on your keyboard
- Wait till device enters in “fast boot” mode. Fast boot mode will reflect on the screen, refer the image below.


- Enter the command: fast boot flashing unlock
- It will show one screen as shown in the image below.


- On the screen it will prompt to press “Volume-up” to unlock Bootloader, or “Volume Down” to
cancel. If you have changed your mind, press volume down else press volume up (Unlock may void warranty).

- You will see unlock Pass screen,as shown in the image below.


- If you want to flash your custom system image, then enter in fast boot mode.
- Enter the command: fast boot reboot fast boot. Wait for phone to boot up, as shown in the
image below.


- For 1b variant In1B-E6523, always use Android-Go custom system image, and
- For 1B-E7533, use Normal Android custom system image.
- Command for flashing: Fast boot flash system <path of image where it is placed\system.img>
- Reboot device after flashing is done:
Fast boot reboot

Kernel Code compatible with Android Q

Kernel code compatible with Android Q is available at this link --> git clone


Q1: How to re-lock the Bootloader?

If you have flashed custom system image, don’t lock the Bootloader, otherwise the device will not boot up.
If you have not used custom image, use the following commands from fast boot mode.
- Enter the command: fast boot flashing lock
- Press “Enter” on your keyboard.

Q2: Are there any risks after unlocking the Bootloader?

Please be aware that Micromax can’t guarantee full functionality and will not be responsible, for any third-party unsigned custom ROM being flashed onto your device after the Bootloader is unlocked. An unsigned third-party custom ROM may not have gone through the thorough tests that we run for each device and software version that we release.
A third-party custom ROM may not work properly on your device, certain functions and services may cease to work. The performance and device data may also be affected and may damage the device permanently. In the worst case scenario, unlocking the Bootloader will cause physical injuries or material damage through explosion due to overheating of the device.

Q3: Will it affect future OTAs after unlocking?

Unlocking the Bootloader may cause for the secure user data partition to become inaccessible. Yet if you simply unlock the Bootloader (without flashing custom recoveries or rooting) you will still receive official software updates (OTAs).
But we cannot guarantee that you will still receive updates if you do operations other than simple unlocking the Bootloader (such as flashing custom recoveries, rooting, etc).
Once you re-lock the Bootloader and use the official recovery, you will receive official OTAs again.

Q4: Will it affect warranty?

Please refer to

Q5: How to re-flash the official ROM after installing a custom ROM?

Users need to go to the nearest service centre to flash the device
User avatar
Posts: 84
Joined: Fri Jan 22, 2021 1:25 am

Really nice, for in 1b too😍😍
DK Max
Posts: 143
Joined: Mon Nov 09, 2020 9:55 pm

Useful for Micromax users..
DK Max
Posts: 143
Joined: Mon Nov 09, 2020 9:55 pm

Much awaited..!
Posts: 20
Joined: Thu Nov 05, 2020 9:52 am

DK Max wrote: Fri Feb 19, 2021 8:57 pm Much awaited..!
Can I Now Install Pixel Experience ROM in Micromax In 1b?
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Joined: Mon Feb 15, 2021 12:43 pm

Useful for my cell
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Posts: 188
Joined: Tue Nov 03, 2020 1:27 pm

Very usefull tutorial for Micromax in 1b users.
Aman :lol:
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Posts: 246
Joined: Thu Sep 10, 2020 2:24 am

Subhodip wrote: Sat Feb 20, 2021 3:33 pm
DK Max wrote: Fri Feb 19, 2021 8:57 pm Much awaited..!
Can I Now Install Pixel Experience ROM in Micromax In 1b?
Hey, Subhodip! After unlocking the bootloader, you can install any custom ROM of your preference.
Posts: 2
Joined: Thu Jan 21, 2021 5:34 pm

Dear Team,

Thanks for the information. I ordered two Micromax In 1b 64gb 4gb. I'm very happy with it.

Please give the scatter file for Micromax In 1b. So that we can easily backup our firmware. It's a kind request.

Waiting for your reply.

Thank you
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