BM8300, seeking for Stream Systems

Hi SuperSatForum and it users,
I am new on this forum, and I am near extranger since I lamentably don't speak turkish...
I am now particularly visiting this forum because I got recently a nice FW which call inside for this "www.supersatforum.com", the relevant file is a FW "Stream Systems BM8300", for HW 12.01.A5, it seems be based on DigiQuest 8000sci and similar STBs...
I loaded this FW, but in my case is not operating MultiV bouquet (yes TPS), while some other users tell that for they work...
I get the message of "bad or no signal", it is not a warning of CAS not encrypted... and quality and intensity of signal is so low (5-15%)...
Can I know where is the source link of that file in this forum?,
Can I get the fresher (more recent) version of this FW?, where able also for MultiV... and all remaining k*ys renewed?.
I guess it is not feasible yet Polsat on 12.01.A5 or 12.03.A5, but I hope to be wrong, I am or not right?.
I am avoiding to introduce this discussion also on "Sunny", "Digicag, Digiline, etc." STBs... even if as kind of HW they are *****alent...
Anticipated thanks, Regards,
Anticipated thanl