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If you find that you have encountered an IO error like the following picture, please contact us at( firstname.lastname@example.org) to update the firmware. Please also attach the order number, thanks!
To update the X873 FW:
1) Connect the X873 to an USB port of windows 7/10 computer with a USB A male to male cable (without going through a hub, USB 2 or USB 3 are all ok.)
2) Double click the WinRAR self-extracting archive (X873-FW-update.exe) provided and click "Install"
3) The software will update the firmware automatically
4) If firmware is updated successfully. "PASS" will be appeared at the bottom right of the window.
Thanks for puchasing the X873 and sorry for any inconvenience that caused!