Flash firmware on Jexaa JexTab 808
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How to flash Jexaa JexTab 808?
Why reinstall the firmware?
Errors begin to appear in the Android operating system.
Some applications stop opening.
Many programs from the Play Market do not work.
The phone turns off for no apparent reason.
The phone began to work slowly.
You are not satisfied with the functionality of the stock firmware.
Where can I find the firmware?
On the official Internet resource of the phone 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 your computer.
Insert your SD card into your phone. It must have enough memory to fit the firmware.
Find out the exact model of your smartphone.
Charge your phone fully.
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.
After moving to the next screen, select the 'TWRP FLASH' item and provide the application with root rights.
On the main screen of the application, the 'Select Device' drop-down list is available, in which you need to find and select the device model for installing the recovery.
After selecting the phone, the application will redirect the user to a web page to download the modified recovery environment image file. 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.
Press the 'FLASH TO RECOVERY' button and confirm your choice, press '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 SD memory card into the phone.
To reboot in recovery, it is convenient 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 tap 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.
Everything is ready to start flashing. Press the 'Install' button.
The file selection screen appears. At the very top is the 'Storage' button, select the location where the firmware file is located.
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, you need to check the item 'Zip signature verification', which will avoid using corrupted 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 installation procedure is indicated by the inscription 'Successful'.
Summary: Operating System: Android v2.2 (Froyo); SIM Slot(s): Single SIM; Network: 3G: Available; Dimensions: 200 (H) x 150 (W) x 8 (T) mm; Weight: 400 grams; Colours: Black; Screen Size: 8 inches; Screen Resolution: 800 x 600 pixels; Pixel Density: 125 ppi; Display Type: LCD; Touch Screen: Resistive Touchscreen; Processor: 800 MHz; RAM: 256 MB; Internal Memory: 2 GB; Expandable Memory: Up to 16 GB; Resolution: 2 MP; Camera Features: Fixed Focus; Battery capacity: 1800 mAh; Type: Li-ion; Talktime: Up to 6 Hours(2G); Network Support: 3G; SIM 1: 3G Speed: EV-DO category Rev.A; Wi-Fi: Wi-Fi 802.11, b/g; Bluetooth: No; USB Connectivity: USB 2.0; Other S ...
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