Firmware · 2017-06
Whistler Official Upgrade (legacy DMR upgrade) for PSR-800, PRO-18, PRO-668
Recommended version Not hosted — available from the manufacturer
Paid mail-in service in which Whistler fitted its Boot 2.0 loader and WS1080 CPU/DSP firmware to GRE PSR-800, RadioShack PRO-18 and PRO-668 radios, adding DMR (and P25 Phase II on the PRO-18). Launched June 2017 at $59.99; later $69.99, $99.99 for radios that had run unauthorized firmware, $129.99 with repair. Availability under Goliad in 2025-26 is uncertain; contact [email protected].
Read before installing. Link only: a paid service, not a download. No firmware file can substitute for it. Unofficial WS1080-derived 'DMR' files for the PSR-800/PRO-668 exist and are not hosted; they carry a date lockout. Whistler's own product page (whistlergroup.com/products/upgrade) returns 404 in 2026.