Firmware update to solve launch x431 error: Err DiagnoseMain ID: -5.

This write-up about Launch X431 V diagnostic firmware update manual will help to solve the error: launch x431 Err DiagnoseMain ID: -5.

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Launch x431 error message:

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DiagnoseMain Err ID: -5

Failed to obtain firmware information.

Possible reasons:

1 Firmware does not work normally. Please retry after power off and on again

2 Firmware program is abnormal. Please update it

3 Firmware type is incorrect. Please contact the local dealer…

How to solve Launch x431 DiagnoseMain Err ID: -5:

(also How to update Launch x431 firmware

Go to Menu
then Firmware Update

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Launch x431 firmware update successfully.

Now the newest x431 v 8 inch firmware version is 11.49.

Enjoy!