Sigma Key v.2.26.11 Setup Download
Sigma v.2.26.11. Flash Huawei via Upgrade Mode
Sigma Software v.2.26.11
1. Released flashing via UPGRADE MODE feature for
Huawei smartphones based on Qcom and Hisilicon:
Press vol+vol- and then connect USB cable to enter the Upgrade mode
Possible to use original update.app flash files from open sources, e.g. from here or here
Please use this method as a main method to flash Huawei smartphones.
2. Released ENABLE DOWNGRADE feature (in Manufacture mode) for
Huawei smartphones based on Qcom/Hisilicon.
Sigma Key Software v2.26.11 released
You may use it:
To downgrade phone’s firmware version – for example, downgrade from higher to lower one.
To change phone’s localization (for example, to switch from Operator1 to Operator2).
How to do that:
Change provider settings (in manufacture mode)
Enable downgrade (in manufacture mode)
Flash the phone with the firmware that fits the selected provider settings
(Using upgrade mode: vol+vol-and powerON)
This solution is included into Pack 3 activation.