Go to File > Import Image and select the .img file you downloaded. Connect the Box: Unplug the power from the ZTE B760H.

Power off the ZTE ZXV10 B760HS3 by unplugging the power adapter.

If you want to avoid the risks of a full firmware overwrite, you can use a "Proof of Concept" method to launch third-party apps:

, a firmware meant for the standard B760H may fail. Always verify the Kernel version in the device settings before starting. If you'd like to move forward, I can help you: Find the specific USB Burning Tool version needed. step-by-step guides for the S3 variant. Troubleshoot connection issues between your PC and the box. hardware version current ISP are you working with?