All firmware is officially posted by the manufacturer, I indicated the link on the previous page. By the way, your file is useless, because it is not enough to extract or rename the ATA file to BIN for installation. You need to edit it in the hex editor.
It seems I have come to the right place ... I hope. I recently bought the 70Mai Pro Plus A500S. I haven't fitted it to my car yet. Today I connected it to my pc to get the settings correct. Everything was fine and I was able to set everything. On the app I then got notification of a firmware...
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