In OrCAD 16.5, the "Update Cache" feature may occasionally fail to update footprint names properly. Users on Cadence Design Systems forums recommend using "Replace Cache" instead to ensure properties are correctly overwritten. Cadence Allegro SPB 16.5 Hotfix_SPB16.50.018_wint_1of1.exe
The last major hotfix for 16.5 was Hotfix 060 (though some platforms saw 061). It addressed over 50 documented issues. Here’s what users reported as “fixed for good”: orcad 165 hotfix spb 165 updates fix
For simulation engineers, base SPB 16.5 often fails to converge on circuits with bidirectional I/O models. The error “Analysis failed: No convergence” appears repeatedly. Hotfixes introduced better GMIN stepping algorithms and updated model libraries from Texas Instruments and Analog Devices. In OrCAD 16