Flash firmware on CAT S42 H plus
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How to flash CAT S42 H plus?
Why reinstall the firmware?
Errors in the operation of the Android OS begin to appear.
Some applications stop opening.
Some applications from the Play Market do not start.
The phone restarts for no reason.
The phone began to work slowly.
You want to update your firmware.
Where can I find the firmware?
On the official Internet resource of the phone manufacturer.
On certain sites where developers post custom or official OS.
What should be done before installing the firmware?
Back up your phone's user data.
Insert your SD card into your phone. It must have enough memory to fit the firmware.
Remember your smartphone model.
Charge your phone fully.
Find and download the archive with Firmware. And place it on the SD card.
Installing TWRP Recovery
Download the Official TWRP App from the Play Market. And install it.
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, select 'Select Device', and find your phone model.
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.
After downloading the image file, return to the main screen of the Official TWRP App and press the 'Select a file to flash' button. Then we tell the program the path where the file loaded in the previous step is located.
Click the 'FLASH TO RECOVERY' button and confirm your choice, click 'OK' in the question window.
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 card. Using a PC or laptop card reader.
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 appears. At the very top is the 'Storage' button, select the location where the firmware file is located.
Select the location where you copied the files. Press the OK button.
Select the firmware file 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: OS: Android 10, planned upgrade to Android 11; Chipset: Mediatek MT6761D Helio A20 (12 nm); CPU: Quad-core 1.8 GHz Cortex-A53; GPU: PowerVR GE8320; Type: IPS LCD; Screen Size: 5.5 inches, 78.1 cm 2 (~62.7% screen-to-body ratio); Resolution: 720 x 1440 pixels, 18:9 ratio (~293 ppi density); Protection: Corning Gorilla Glass 5; Card slot: microSDXC; Internal: 32GB 3GB RAM; Single camera: 13 MP, f/2.0, (wide), PDAF; Features: LED flash; Video: 1080p@30fps; Single camera: 5 MP; Loudspeaker: Yes; 3.5mm jack: Yes; Sensors: Accelerometer, proximity, compass; Type: Li-Ion 4200 mAh, non-removable; Dimensions: 161.3 x 77.2 x 12.7 mm (6.35 x 3.04 x 0.5 in); Weight: 220 g (7.76 oz); SIM: Dual SIM (Nano ...
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