Anyone has a copy of A5 5.51 / 5.52 ?

Conitec support say that A5 copies are not available anymore.

Can anyone provide a copy? pretty please?

https://archive.org/details/gsdemoa5

That's 5.20.

I have a backup of the 5.24 Commercial Edition Patch thanks to another helpful user. So, if you have the Commercial Edition license, you could use that patch instead 5.51/5.52. I personally think that using 6.60 instead of 5.51/5.52 is the better choice because it is more mature and feature complete for BSP-geometry based games. 5.24 on the other hand supports DX7, 8 bit mode and old syntax and 5.51 doesn't. So 5.24 is the best version for old school 3D games. I don't have a backup of 5.51/5.52.

Or you could ask on the Acknex Discord server if someone has a backup.