A small update - v29, recovery and kernel for the LPX13D 5.0 preview. Also brings new autoboot type - you can set it up so that boot manager won't show up unless you hold a key during boot, otherwise it boots the default ROM. Right now, installing the 5.0 as primary ROM works for me.
As for the wifi issues - do you have newest bootloader and radio? The ones from LPX13D factory image?