Try downloading the file (BDEMU.BIN) separately from [Register or Login to view links], and copy it to "dev_hdd0/game/BLES80608/USRDIR" using any filemanager/ftp program.
... and make sure BD-ROM Emulator is enabled, do this by going to the XMMB (in multiman), go to Settings, scroll down until you see BD-ROM Emulator it's the last one and change it by pressing "X" to Hermes or Standard. After doing this restart the PS3 and hope it works .
Last edited by HeyManHRU; 09-03-2011 at 01:26 AMReason: Automerged Doublepost
Story goes as follows... I originally downgraded it from 3.61 back to 3.55 - started getting BDROM errors with multiman etc.
Here's how I fixed it.
Downgraded from 3.55 KMEAW to 3.55 OFW
Downgraded from 3.55 OFW to modified 3.41 FW
Downgraded from 3.41 to 3.21 OFW
Upgraded from 3.21 OFW to 3.41 OFW
Upgraded from 3.41 OFW to 3.50 OFW (3d Bluray playback)
Upgraded from 3.50 OFW to 3.55 OFW
Then from 3.55 OFW to 3.55 KMEAW again