During up/install Rom for Xiaomi redmi 4 Prime, it may be faulted by slipping cable or up a wrong ROM, that can lead to bricking your device, and your device does not get connected to your computer and/or get connected QH-900E. Then you will need to find testpoint for Xiaomi Prime redmi 4 to unbrick and reinstall the software for it.
Testpoint for Xiaomi Redmi 4 Prime , where it is ?
The testpoint of Rm4 Prime (redmi 4 Pro) is next to the cable screen (image attached). To inject into testpoint , the cage cover you need to open the connection cable (battery - touch - screen).
How to unbrick Xiaomi Redmi 4 Prime
[ST] source: http://congnghe24.net/testpoint-unbrick-xiaomi-redmi-4-prime.html
Testpoint for Xiaomi Redmi 4 Prime , where it is ?
The testpoint of Rm4 Prime (redmi 4 Pro) is next to the cable screen (image attached). To inject into testpoint , the cage cover you need to open the connection cable (battery - touch - screen).
How to unbrick Xiaomi Redmi 4 Prime
- open back battery cover of Xiaomi Redmi 4 Prime
- Screw up 3 screws to open the cage cover of the connection cable
- Use spin or whatever to connect these two tespoints in few seconds and plug USB cable in
- PC will recognize the USB QH9008
- Now, Flash Global ROM for Xiaomi Redmi 4 Prime by MiFlash tool => Guide to flashing ROM = MiFlash
[ST] source: http://congnghe24.net/testpoint-unbrick-xiaomi-redmi-4-prime.html