Flash firmware on Micromax Bolt D303
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How to flash Micromax Bolt D303?
Why reinstall the firmware?
The operating system keeps getting errors.
Some installed applications stop opening.
Some programs from the Play Market do not start.
The phone restarts or shuts down randomly.
The phone started to work slowly.
You want to update the firmware, as it does not suit you in terms of functionality.
Where can I find the firmware?
On the phone manufacturer's website.
On sites where third-party developers and phone manufacturers post custom or official OS.
What should be done before installing the firmware?
Create a backup copy of user data, contacts and photos and transfer it to your computer.
Insert SD card. An SD card is needed to write firmware to it.
Determine your smartphone model.
Fully charge your phone. If the battery runs out during boot, the device will no longer turn on.
Find and download the archive with Firmware. Place it on the SD card.
Installing TWRP Recovery
Download and install the Official TWRP App from the Play Market.
When you start the application for the first time, you must agree to install the firmware, as well as agree to grant the application Superuser rights and click the 'OK' button.
Going to the next screen, select the item 'TWRP FLASH' and provide the application with root-rights.
On the main screen of the application, click 'Select Device', and find your phone model.
After selecting a device, the program redirects the user to a web page to download the corresponding image file of the modified recovery environment. Download the suggested *.img file.
After downloading the image file, go 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.
Press the 'FLASH TO RECOVERY' button and confirm your choice, press 'OK'.
When the message 'Flash Completed Succsessfuly!' appears. Click 'OK'. The TWRP installation procedure is now complete.
Copy the firmware and other necessary files to the SD card.
Insert a memory card into your phone.
To reboot into recovery, you need to enter the menu accessible by pressing the button with three stripes in the upper left corner of the main screen of the application. 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, you need to delete all user data from the phone, this will avoid many problems. press 'WIPE' on the home screen.
You can start flashing. Click the 'Install' button.
The file selection screen appears. At the very top there is a 'Storage' button for selecting an SD card.
Select the location where the files were copied. Press the OK button.
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 flashing the phone will begin, accompanied by the appearance of inscriptions in the log field and the movement of the progress bar.
When the procedure for installing the firmware is completed, the message 'Successful' appears on the screen.
Summary: Battery capacity (mAh): 1300; Removable battery: Yes; SAR value: NA; Screen size (inches): 4.00; Touchscreen: Yes; Resolution: 480x800pixels; Processor: 1.3GHz dual-core; Processor make: MediaTek MT6572W; RAM: 512MB; Internal storage: 4GB; Expandable storage: Yes; Expandable storage type: microSD; Expandable storage up to (GB): 32; Rear camera: 3.2-megapixel; Flash: Yes; Front camera: 0.3-megapixel; Operating System: Android 4.4; Wi-Fi: Yes; Wi-Fi standards supported: 802.11 b/ g/ n; GPS: Yes; Bluetooth: Yes, v 4.00; NFC: No; Infrared: No; Wi-Fi Direct: No; MHL Out: No; HDMI: No; Headphones: 3.5mm; FM: Yes; Number of SIMs: 2; SIM 1: ; GSM/ CDMA: GSM; 3G: Yes; ...
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