Flash firmware on Jackleo Hero
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How to flash Jackleo Hero?
Why reinstall the firmware?
Errors in the operation of the Android OS begin to appear.
Some installed applications stop opening.
Many programs from the Play Market do not start.
The phone restarts for no reason.
The phone started to work slowly.
You want to update your firmware.
Where can I find the firmware?
On the phone manufacturer's website.
On specialized services on which developers lay out custom or official OS.
What should be done before installing the firmware?
Back up your phone's user data.
Insert SD card. An SD card is needed to write firmware to it.
Remember your smartphone model.
Fully charge your phone. If the battery runs out during boot, the device will no longer turn on.
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 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, select '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.
When the file is loaded, 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.
Click the 'FLASH TO RECOVERY' button and confirm your choice, click 'OK' in the question window.
When the message 'Flash Completed Succsessfuly!' appears. Click 'OK'. The TWRP installation procedure is now complete.
Write the firmware and other necessary files to the SD 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, you need to delete all user data from the phone, this will avoid many problems. press 'WIPE' on the home screen.
Now you can start flashing. Press 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 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 flashing the phone will begin, accompanied by the appearance of inscriptions in the log field and the movement of the progress bar.
The completion of the firmware installation procedure is indicated by the inscription 'Successful'.
Summary: OS: Android 4.4 KitKat; CPU: Cortex-A7; CPU frequency: 1200.0 MHz (2-core); Chipset: Mediatek MT6572; GPU: Mali-400; RAM Memory: 512.0 MB; Display: LCD Color, 540x960 px (6.0") 184ppi; Touch screen: yes; Built-in memory: 4 GB; Memory card: MicroSD/TransFlash max. 32 GB; Camera: 1.92 MPx; Resolution: 1600x1200 px; Flash: LED; Autofocus: no; Optical zoom: no; Digital zoom: yes; Second camera: 1.92 Mpx; Resolution: 1600x1200 px; Bluetooth: yes; EDGE: yes; GPRS: yes; GPS: yes; A-GPS: no; GSM: 850 900 1800 1900; HSDPA: 850 2100; USB: yes; WAP: yes; Wi-Fi: yes; Audio out: Jack 3,5 mm; MP3 player: yes; MP3 ringtones: yes; Polyphony: yes; Radio: yes; RDS: yes; RSS: yes; Vibra: yes; Dictaphone: yes; ...
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