How to Flash and Update Susan M5 X8 4G LTE

Files to be downloaded:
- Susan M5 4G LTE flash file here or here.
- SPD Upgrade Tool here or here.
- USB Drivers here.
Step 1: Extract and launch SDP Upgrade Tool (Research Download).

Step 2: Click Load packet button as shown below.

Step 3: Now, browse to the flash file that you've downloaded from the links above after you have extracted them. Choose .pac file then select it as shown below.

Step 4: Wait until the program loads packet file as shown below.

Step 5: After .pac file has been loaded, click Start downloading as shown below.

Step 6: Turn off your phone then hold Volume down and connect it to the PC. Release the button as soon as Downloading begins.

Step 7: Wait during flash process until it says: Unplugged - Passed.