I think that's what we're trying to do with changing the ID of the Backup Manager.
I've changed the Backup Manager ID to that of retail Blur Multiplayer Demo that's available on PSN. I think randalf used the Debug PKG of Mirror Edge. I've also padded the file size to that of the Blur Demo. Just having troubles recombining the PKG, but I'll keep reading and trying lol
I'll need to sign into PSN, start the download of Blur Multiplayer Demo - cancel the download, just so it registers that I've download the demo, then install the Backup Manager with the Blur ID. Sony would scan and see that I've downloaded and installed the Blur Demo, when instend it's the Backup Manager. Instend of the LAUN12345 ID.
Only guessing, but if Sony checks the ID of what was download from PSN to the IDs of games/data/patches stored on the console [and like you mentioned to send off updates and patches etc], they would be able to see any mismatch.
I doubt they would be able to look inside the contents of the PKG file either, as surely this would use bandwidth, so changing the contents of the PKG should be fine [like me adding a dummy file]. Though the EBOOT.bin and SFO will need to be edited too so that all referneces link up. EBOOT.BIN asks for LAUN12345, so need to change that to that of the retail PKG demo.
As stated by CJPC it depends if the USB devices calls on LAUN1234 or it's mearly a debug PKG booter, but in relation to randalf findings, it seems to run fine with the Mirror Edge ID. I'm guessing it's showing the name 'Backup Manager' from the PARAM.SFO file, which makes sense as the ICON0.PNG is there too. Going to try running it on the PSP [yes I know its a PS3 file and it's EBOOT.BIN whereas PSP is EBOOT.PBP - though the structure of both files look the same] but if I can get it to show 'Blur' instead of 'Backup Manager', then I'll have a better understanding of how the ID/EBOOT/PKG works.
I'm thinking that all ID's get stored within the PS3 and this is sent to Sony, when online/logged in. It'll only be a small file, so easy to send back home. Kinda like the Xbox360. Mine was banned, I had never played went online, but connected it to the marketplace, and then was banned. Remour has it that info on disc media is stored somewhere and is send back once connected to M$. I didn't use PFI or DMI (security sectors) and M$ detected this. So it's my belief that maybe all ID are stored somewhere and sent back, checks will be made and any consoles with LAUN1234 as ID will be flagged and banned within the next 3 months - the first xbox ban came just after the Halo 3 beta test when people were using backups of Crackdown. So if the ID is different and to a game/demo not already installed on the console, then it's more hidden.
Oh a random thing would be good, though I'm thinking that once installed the ID is stored, so no real need for it to be random generated each time. Might be more noticeable, as Sony must know all ID and any that doesn't exist will be flagged. Oh and therefore if this works, we'd need to be able to have more than just one game ID, otherwise, it'll be strange when all of a sudden, thousands of people started to install the Blur Demo.
Well it kinda works for the PSP.
Ok this is what I did. Installed PBP Unpacker. Renamed the EBOOT.BIN to DATA.PSP [i know that it won't load, but I'm curious about the name and ID]. With PBP Unpacker, I then inserted the DATA.PSP, the ICON.PMF (original BM icon that randalf posted) and the PARAM.SFO (now with the changed ID to that of Blur Demo). Saved it as a EBOOT.PBP and transfered to the PSP [PSP/GAME/Test]. Went to the Game and there was the 'Backup Manager' down arrow ICON. What was interesting was the title was Blur Game Demo and not Backup Manager.
Not sure if this helps or anything, but maybe this means that it's fairly easy to hide the ID