If you can find the correct 2021 build for your hardware revision, flash it. Just follow the upgrade precautions carefully. And accept that the time/date will always be wrong after a battery disconnect—that’s a hardware limitation no firmware can fix.
The 2021 updates for this model typically addressed several key performance areas: vg421wdv2 firmware 2021
To find the latest firmware for your (or similar vacuum gauges), you can check the official Fieldpiece Software & Firmware Updates page. If you can find the correct 2021 build
: Ensure the device is plugged into a stable power source. A power failure during the "Write" phase can brick the hardware. vg421wdv2 firmware 2021
Resolved intermittent "no dial tone" issues and improved SIP protocol compatibility.