UMIDIGI BISON V1.0_20211231 ROM - SPFT + OTA release

bencebacsi

This is the SP Flash Tool + OTA release of the

V1.0_20211231 system software

for UMIDIGI BISON

Flash tool operation is recommended to experienced users only. If you are not yet an experienced flash tool user, please carefully read the flash tool tutorial before proceeding, and strictly follow each instruction.

Except if an authorized or responsible expert directly asked you to do that,

never format the flash chip of your device or you instantly lose your warranty!

UMIDIGI BISON receives all updates automatically via FOTA method. You need this tool only in case of emergency (if you've bricked your phone), if you want to apply a clean install or if you want to clear all root access and custom recovery to make your phone able to receive FOTA updates again. Moreover, flashing with SPFT is the only option to repair (replace) damaged system software.

Changelog:

• Minor bug fixes and system optimization
  

FOTA vesion: UMIDIGI_BISON_V1.0_20211231

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SP Flash Tool

Resources:

Flashtool tutorial: http://bit.ly/SPFTguide

ROM: >>> UMIDIGI_BISON_V1-0_20211231.rar <<<

Extract the .rar file before use. The scatter file (MT6771_Android_scatter.txt) is inside the extracted folder, together with the other components.

If you get a ''version is incorrect'' error message after flashing the 0405 version, flash this version: UMIDIGI_BISON_V1-0_20210401.rar

SPFT: SP_Flash_Tool_v5.2136.rar

VCOM driver: Windows 10 can automatically install it. Please make sure that your Windows is logged in with administrator rights and your computer has a working internet connection when first time connecting your phone.

Here's an optional solution to start the flashing process on your UMIDIGI BISON if the standard method doesn't work.

It's especially useful if your phone is bricked or is stuck in bootloop

1. Connect your phone to USB.

2. Start the flashing process with the Download button in the flasher app.

3. Press and hold the power button of your phone until the flashing process starts (red bar appears at the bottom of the app window), then release it. In this process you have to keep the power button pressed for about 10 seconds.

4. Wait until the flashing process finishes.

If you accidentally formatted the flash chip of your phone, visit the following thread: A7, A7S, A7 Pro, A9 Pro, BISON: Repair IMEIs, MEID and Google certificate

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OTA (recovery) update

Manual (local) OTA update method instructions

• Copy the downloaded .zip file to the internal storage of your phone
• Go to Settings → About phone → Wireless update
• Tap the 3-dot menu button in the top right corner and select Local Updates
• Brows for the ...update.zip file and select it
• Select INSTALL NOW, then OK in the Warning window. Your phone reboots into recovery, the update gets installed, then your phone boots into Android. Your updated system is ready to use.
  

Update file for manual OTA update:

>>> UMIDIGI_BISON_V1-0_20211231_update.zip <<<

It can update version 20210405 only

Optional method (in case if the manual OTA update gets stuck): Install from recovery

You need a microSD card (with at least 4GB capacity) installed in your phone!

• Copy the ...update.zip file to your SD card.
• Press and hold the volume-up and power buttons together until your phone restarts. As soon as the boot screen flashes up, release the power button and keep only the vol-up button pressed.
• In a few seconds, your phone boots into Recovery and you see a lying android figure with an exclamation mark in red triangle on its tummy, and ‘No command’. Release the vol-up button.
• Press and hold the power and vol-up buttons (in this order) together, then release them (first the vol-up button) to call the recovery menu. Now you can move with both volume buttons, and select an item with the power button.
• Move to ‘Apply update from SD card’ and select it.
• On the next screen brows for the update file and select it. The update process will start and needs a few minutes to be finished.
• After a succcessful installation, you can read the ''Install from SD card complete.'' message and the recovery menu is available again.
• Select 'Reboot system now'. Alternatively you can perform a factory data reset here by choosing 'Wipe data/factory reset'
  

Kind request from users:
Please report any kind of new issues you experience after installing this update only if you've already flashed this ROM with SP Flash Tool in Firmware Upgrade mode. In rare cases a FOTA update can cause more or less serious malfunctions but that means only the update process went wrong, not a badly developed ROM. An updated stock ROM, especially related to the basic functions will not cause any new issues but will solve some of the existing ones.

Joseph.Stewar

Hello brothers can you help me with my 6gb/128gb umidigi bison the case is that I updated it to android 11 it was successful but I lost my original imei but I replaced it with another, I can surf the internet and I can receive and send messages but I can not call no I can receive calls, when I change to 3G or 2G signal I lose signal, but with 4G that doesn't happen, please help me to solve step by step, to make and receive calls again. I hope you answer me.. I'm from Peru

-greg-

Joseph.Stewar replied at 2022-4-15 10:07
Hello brothers can you help me with my 6gb/128gb umidigi bison the case is that I updated it to andr ...

Hello. Repair correctly IMEI. Instructions are on our forum:
https://community.umidigi.com/fo ... 9492&extra=page%3D1
https://community.umidigi.com/fo ... 1375&extra=page%3D1

Joseph.Stewar

-greg- replied at 2022-4-15 14:43
Edited by -greg- at 2022-4-15 14:48  

I did all the procedure but the only thing that doesn't solve it is the calls that I can't call or receive, everything works except the calls, there is no other method to solve this problem please

Ethan1024

My problem is that I'm unable to update my Umidigi bison to android 11, it just gives a message saying the device is up to date.Here is an attachment of screnshots i took of it
https://drive.google.com/drive/f ... yoFSYUQ?usp=sharing

-greg-

Ethan1024 replied at 2022-5-20 21:37
Edited by Ethan1024 at 2022-5-20 21:39  

My problem is that I'm unable to update my Umidigi bison  ...

You have Bison 2020 - he has no update to Android 11. Some say it's the best version. In Android 10 you have a full engineering menu. If you don't have to, don't combine.