SCR-3310 v1 firmware below 5.26 fails on Win 10/11 or Mac

windowsmacos

Symptoms

SCR-3310 v1 stops working on newer Windows or Mac.

Likely cause

Firmware below 5.26.

Fix

1. Confirm the unit is v1 (no 'V2' label). 2. Download SCR3310_fw5.26Ver1OnlyFWUPdate.zip from militarycac.com. 3. Run FWUpdate.exe on a real Windows machine or under Boot Camp (NOT in a VM). 4. Do not run this on a v2 unit - it is already past 5.26.

Sourced from militarycac.com. Rewritten for clarity.

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