14. Does the BTR5 2021 support upgrade through firmware?
No. The firmware of the BTR5 2021 is based on that of the old BTR5, which has been well recognized by our users to be very stable. So it is unecessary to upgrade it anymore.
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No. The firmware of the BTR5 2021 is based on that of the old BTR5, which has been well recognized by our users to be very stable. So it is unecessary to upgrade it anymore.