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Need FSUIPC4 4.957b for Windows XP SP3 / FSX / PFC Cirrus II

Posts: 1

ckuelzow

Registered

Topic starter

September 6, 2026 9:59 pm

(@ckuelzow)

Joined: 2 weeks ago

I am restoring a legacy PFC Cirrus II simulator running Windows XP SP3 32-bit and Microsoft Flight Simulator X. I need an older XP-compatible copy of FSUIPC4 v4.957b, or another confirmed pre-4.96 version.

I understand current FSUIPC4 versions no longer support XP. If anyone has the original 4.957b installer/package from a legitimate archive and can share it, I would greatly appreciate it.

I am also looking for the compatible PFCFSX.dll for the serial PFC Cirrus II using COM1.

Thank you.

1 Reply

Posts: 364

FSUIPC Support

Moderator

September 7, 2026 9:50 am

(@fsuipc-support)

Joined: 11 months ago

Sorry but I do not have any older versions of FSUIPC4 available. You could try posting on avsim to see if anyone still using XP has this version.

The PFCX.dll is contained in the PFC DLL package available in the 'All Products' download page. I do not know if this is compatible with XP or not, sorry.

John