If you have a Pro6H or Pro 6T receiver we highly recommend that you upgrade to firmware version 220.127.116.11 immediately!
This upgrade corrects an issue where some Pro 6 series receivers may stop responding through regular use. If the receiver is affected by this issue, the device is not recoverable by a service repair. To avoid the risk of this occurring, we strongly recommends that all Pro 6 series receivers are upgraded to GNSS firmware version 1.03.1.
How to install:
Installation information can be found in the Trimble Pro 6 Series Firmware version 1.03.1 – Release Notes