Step 3 / 4

For best experience, we recommend you to browse this page on your PC.


We have deprecated HCTSW Care UU4 and switched to our All-In-One flash tool called OSTRemote 3.

Run the program

Install Driver

Please change the login mode to “Offline Mode” here.

Then for Windows or Linux only, click “Install Driver” to have Driver installed. For Linux, it would be the udev rules.

Perform Bootloader Unlock

Simply change the “Single Flash Mode” to “Bootloader Unlock”, and follow the instruction given from program. That’s it.