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Home › Tech Support by Vendors - Qstarz › If you purchased BT-Q818XT before April 6, 2019, please download the below firmware update package, which can be used to fix the April 2019 GPS Week Number Rollover(WNRO) issue.

If you purchased BT-Q818XT before April 6, 2019, please download the below firmware update package, which can be used to fix the April 2019 GPS Week Number Rollover(WNRO) issue.

Posted by shaojie wu on Sep 19, 2020

Please download here.

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