Kevin F said:
I lost them as well. I heard that two reboots within 24 hours will force a guide data flush and redownload it all, including logos.
Two reboots within 30 minutes
will flush the Guide. Logos may or may not be included. There's a supplemental download that usually occurs automatically following a software upgrade, may happen periodically; no one can say for sure. Worth doing at bedtime.
235 is labelled "STYLE", is SD but there's a round logo.
212 is NFL, HD, and has a small logo.