In case you haven't been following, the Marquee doesn't have any custom roms yet because we can't get CWM or any custom recovery to work with our hardware. Yes, Tcaudill01 sort of got CWM installed, and AaronEmoBoi claims to have had it working once, but the sad reality appears to be that the memory addresses are different on the Marquee than they are on the GSM Optimus Black (which is the CWM we've been trying to use). That means performing a backup/recovery operation is accessing the wrong data, causing failures and bricked devices.