Flash firmware on Acer Iconia B1-721
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How to flash Acer Iconia B1-721?
Why reinstall the firmware?
Errors in the operation of the Android OS begin to appear.
Some applications will not open.
Many programs from the Play Market do not work.
The phone shuts down and restarts for no apparent reason.
The phone began to work slowly.
You want to update your firmware.
Where can I find the firmware?
On the official website of the manufacturer.
On sites where third-party developers post custom operating systems.
What should be done before installing the firmware?
Back up your contacts and user data and transfer it to another medium.
Insert your SD card into your phone. It must have enough memory to fit the firmware.
Remember your smartphone model.
Charge your phone fully. If the battery runs out during boot, the device will no longer turn on. It will be difficult to restore it.
Download archive with Firmware. Place it on the SD card.
Installing TWRP Recovery
Download the Official TWRP App to your phone from the Play Market. And install this app.
When you start the application for the first time, you must agree to install a new firmware and all the risks associated with this, as well as agree to grant the application Superuser rights and click the 'OK' button.
In the next screen, select the item 'TWRP FLASH' and provide the application with root-rights.
On the main screen of the application, select 'Select Device', and find your phone model.
After selecting the phone, the program will redirect the user to a web page to download the corresponding image file of the modified recovery environment. Download the proposed *.img file.
When the download is finished, you need to return to the main screen of the Official TWRP App and click on the 'Select a file to flash' button. Select the file downloaded in the previous step.
After adding the image file to the program, click the 'FLASH TO RECOVERY' button and confirm your choice, click 'OK'.
When the message 'Flash Completed Succsessfuly!' appears on the screen. Click the 'OK' button. The TWRP installation procedure is now complete.
Transfer the necessary files to the SD memory card. Using a PC or laptop card reader, it will be much faster.
Insert a memory card into the phone.
To reboot into recovery, you need to use a special item in the Official TWRP App menu, accessible by pressing the button with three stripes in the upper left corner of the main screen of the application. We open the menu, select the 'Reboot' item, and then click on the 'REBOOT RECOVERY' button. The phone will reboot into the recovery environment automatically.
Firmware via TWRP
Before flashing, it is recommended to clear the 'Cache' and 'Data' sections. This will delete all user data from the device, but avoid a wide range of software errors and other problems. You must press 'WIPE' on the main screen.
Now you can start flashing. Press the 'Install' button.
The file selection screen is displayed. At the very top is the 'Storage' button, which allows you to switch between types of memory.
Select the storage to which the files were copied.
Find the file we need and click on it. A screen opens with a warning about possible negative consequences, as well as the item 'Zip signature verification'. This item should be checked by placing a cross in the check-box, which will avoid using damaged files when writing to the phone's memory sections.
The procedure for writing files to the phone's memory will begin, accompanied by logging and filling in the progress bar.
The completion of the firmware installation procedure is indicated by the inscription 'Successful'.
Summary: Smart Phone OS: Android OS, v4.2 (Jelly Bean); Chipset: Mediatek MT8312; CPU: Dual-core 1.3 GHz Cortex-A7; GPU: Mali-400; Type: TFT capacitive touchscreen; Screen Size: 7.0 inches (~56.7% screen-to-body ratio); Resolution: 600 x 1024 pixels (~170 ppi pixel density); Multitouch: Yes; Main Camera: VGA; Video: Yes; Front Camera: No; Card slot: microSD, up to 32 GB (dedicated slot); Internal: 16 GB, 1 GB RAM; Alert types: Vibration; MP3, WAV ringtones; Loudspeaker: Yes; 3.5mm jack: Yes; WLAN: Wi-Fi 802.11 b/g/n; Bluetooth: Yes; GPS: Yes; Radio: No; USB: microUSB v2.0; Sensors: Accelerometer; Messaging: Email, Push Email, IM; Browser: HTML5; Java: No; : - MP3/WAV/WM ...
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