Flash firmware on HTC Desire HD A9191
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How to flash HTC Desire HD A9191?
Why reinstall the firmware?
Errors constantly appear in the Android OS.
Some installed applications do not open.
Many programs from the Play Market do not start.
The phone restarts or shuts down randomly.
The phone started to work slowly.
You are not satisfied with the possibilities of the stock firmware.
Where can I find the firmware?
On the official website of your phone manufacturer.
On specialized services where users 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 your SD card into your phone. An SD card is needed to write firmware to it.
Determine your smartphone model.
Fully charge your device. If the battery runs out during the firmware, the device will no longer turn on.
Find and download the archive with Firmware.
Installing TWRP Recovery
Install the Official TWRP App from the Play Store on your phone.
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.
After moving to the next screen, you need to select the 'TWRP FLASH' item and give the application root rights.
On the main screen of the application, click 'Select Device', and select your phone model.
After selecting a device, the application will direct the user to a web page to download the appropriate modified recovery environment image file. Download the suggested *.img file.
When the file is loaded, you need to return to the main screen of the Official TWRP App and press 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.
When the message 'Flash Completed Succsessfuly!' appears. Click 'OK'. The TWRP installation procedure is now complete.
Copy the required files to the memory card. Using a PC or laptop card reader.
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 'Reboot' and then click on the 'REBOOT RECOVERY' button.
Firmware via TWRP
Before flashing, you need to delete all user data from the phone, this will avoid errors in the software, as well as other problems. Press 'WIPE' on the home screen.
You can start flashing. Click the 'Install' button.
On the file selection screen, at the very top there is a 'Storage' button for selecting an SD card.
Select the storage to which the files were copied.
Select the firmware file 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, this is accompanied by the appearance of inscriptions in the log field and the movement of the progress bar.
After the firmware installation procedure is completed, the 'Successful' message appears on the screen.
Summary: Sim Type: GSM; Dual Sim: No; Dimensions: 123 x 68 x 11.8 mm; Weight: 164 g; Type: Color S-LCD screen, 16M colors; Touchscreen: Yes, with Multitouch; Size: 4.3 inches, 480 x 800 pixels; PPI: ~ 217 PPI; Phonebook: Unlimited; RAM: 768 MB; Internal memory: 1.5 GB inbuilt; Card Slot: Yes, upto 32 GB, 8 GB included; GPRS: Yes; EDGE: Yes; 3G: Yes, 14.4 Mbps Download, 5.76 Mbps Upload; Wi-Fi: Yes, with wifi-hotspot; Bluetooth: Yes, v2.1; USB: Yes, microUSB v2.0; USB Features: USB Tethering, USB Charging, Mass Storage; GPS: Yes, with A-GPS Support; Sensors: Accelerometer, Compass; 3.5mm Headphone Jack: Yes; Extra: DLNA; Camera: Yes, 8 MP with autofocus; Features: Face detectio ...
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