huawei smartphone how to flash unbrick sigmakey tool
huawei smart phone how to flash unbrick sigmakey tool
This feature is intended to be used for phones that won’t turn on, freeze on logo, etc., but still can enter fastboot mode. It's not intended for regular reflashing.
Procedure:
flash
Connect the phone in fastboot mode (vol- power ON) to PC
Select corresponding update.app firmware file and revive the device with Sigma
When the phone starts up normally, reflash it in UPGRADE mode using the corresponding to it flash file
Benefits:
Full/partial write of firmware partitions
FAST direct firmware write via fastboot mode
Flash of regular update.app files to devices with locked bootloader
UPGRADE MODE flashing
SD-card should be removed from the phone
Press vol+vol- and connect USB cable to enter the Upgrade mode
Open Qualcomm tab and go to Flash bookmark
Select PCUI or DBA adapter port (different phone models show different ports) in the port selection tab
Select required update.app flash file and press “write flash”
Important: all partitions of the firmware will be written to the phone in Upgrade mode.
New smartphone models have two flash files: main flash file and localization file. These two files should be flashed together.
Restore calibration data
It's mandatory to root device before starting the operation!
Turn the rooted phone ON and wait until it fully starts up.
Make sure that USB debugging is enabled on your device.
Connect the phone to PC using USB cable and no more further actions should be taken with the phone while the procedure is in progress!
Select "Android ADB" platform from the tab menu in the upper left side of the software.
Go to "Hi-Silicon" tab.
Select "Adb interface" in the ports selection tab.
Press "Restore calibration data" button and select required NV file.
The message "DONE" indicates that the procedure has been completed successfully.
Disconnect the handset.
If you check “Write firmware” field during the Restore calibration data procedure, it allows to restore modem firmware (if a modem firmware is stored in a file).Added board software files for repair of bricked Huawei smartphones:
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