I bought an used PS3 since the previous stopped reading BRs, installed webMAN MOD and it hasn't been freezing my PS3 so maybe it was the previous PS3's HDD's fault. Anyway, I got used to IRISMAN so I uninstalled webMAN MOD again. To fix the PS2 games mentioned
here so that they can be played on CFW without (or with less) issues after being mounted by IRISMAN, their respective CONFIG files have to be downloaded from
here, they have to be renamed them so that their names match the games', their names also have to have ".iso"/".bin (if the "iso"/"bin" filename extension is in lowercase) or ".ISO"/"BIN" (if the "BIN" filename extension is in uppercase) before "CONFIG" to work and they have to be in the same location as the corresponding games (in the PS3's PS2ISO folder).
These CONFIG files can also increase frame rate in some PS2 games and they're the CONFIG files installed by PS2CONFIG (I deleted the latter since I have CFW and not PS3HEN, use IRISMAN and not webMAN MOD and I don't have encrypted PS2 games [except inside some official PS2 Classics]).
EDIT: Apparently, all PS1 emulators have harcoded PS1 game configurations, ps2_emu, ps2_gxemu and ps2_softemu have hardcoded PS2 game configurations and only ps2_netemu can load PS2 game configurations from an external file.
EDIT 2: I gave webMAN MOD a new chance and before reinstalling it I removed IRISMAN. The "webMAN games" setting was empty with my external HDD connected to the PS3, which is odd. I disconnected it, restarted the PS3 and it wasn't empty. I installed prepISO and use it to scan the external HDD connected to my PS3 every time I make changes to my PS1 and PS3 games (which are now in the same partition) since the external HDD is formatted as NTFS. Also, I wasn't being able to connect the PC to the PS3 via FTP using FileZilla Client and webMAN MOD until I did
this. WebMAN MOD already comes with PS2 CONFIG Database installed which contains CONFIG files.