Qualcomm Firmware Backup Tool Fix ⏰

Never restore firmware from a different device. Each Qualcomm chip has unique calibration data. Restoring a persist.bin from another phone will break your sensors.

If you run a phone repair business, a Qualcomm firmware backup tool is mandatory. Before replacing a charging port, screen, or performing a JTAG repair, you backup the device’s unique calibration data. Without this, the repaired phone may have a non-working proximity sensor or ghost touches. qualcomm firmware backup tool