you are wrong. 11111111 will only run on supercid G1's. (and it will be supercid only if it is a developer device or if it has a goldcard inserted. also the hacked SPL fakes supercid, so will work on that one too)
BTW, the diag does not check your RC, it checks the modelid and CID, and the signature, nothing else.
Running 'strings' against this file revealed that it is in fact the RC29 DREAIMG.NBH file. I have since flashed it onto my G1 (running OTA RC30) and now have RC29. Thank you very much, chavonbravo, I want to have your babies.
Awwwwww... Bad news, I can't activate my Google Account again. No data plan.
Umm, anyone know if I deposit some money into my prepaid SIM (currently has a balance of zero), will I get a little bit of data access just enough to connect to Google server? >.>