GRX3 GNSS Receiver

GNSS Firmware Upgrade Please Read:  

For updating the GRX3 receiver to GNSSv5.4, download the corresponding "GRX3 GNSS Firmware v5.4.0 (7.27.21)" zip file below.  Once downloaded, unzip the file and update the GNSS receiver using SRU using a two-step process.  First, use the enclosed *tfi file found within the “Step 1 - B125 Linux bootloader firmware” folder.  Once finished, continue with the upgrade by using the enclosed *.tfi file within the “Step 2 - B125 GNSS firmware” folder.