Just to let you know, i have a similar problem on a Pre 3 bought from the HP Ireland store. It's an 8 gig European model. What happened was there was an intermittent reset problem and it finally refused to start after a reset. i did have many patches installed; i don't know about the "muffle" one. I think the file structure was corrupted because when I tried to doctor, it kept stopping at 12%
I was able to get it going by using Novacom and nuking the filestructure (USB partition and all) following instructions here: WebOS Doctor - 12% Issue - Fixed!!!
I followed this by putting the phone in bootie mode, and doctoring it. When it came back online, everything seemed to work except for the camera: the startscreen with the camera icon would come up, but no noise came from the camera autofocus motor, and the screen remained grey, flashing to white from time to time.
I just did a real full erase, but no re-doctor and the camera is working again.
The phone had been updated to 2.2.4 and the doctor was to the same version.
I'm not sure if the camera and the 12% stuck doctor partitioning problem could be related...
Anyone knowledgable in this out there? Is recreating the filestructure with "mkfs.msdos /dev/mapper/store-media" make your phone fresher than a full erase and doctor? Or did I just have two unrelated problems?
Anyway, my Pre 3 is back to working order. Good luck with yours.
Edit: Oh yes: I used the same Palm profile.