Looks like it should work to get back from the mfg spl to hspl2.08
But I am still unsure of the benefits of the mfg spl, afaik android needs 2.08
But you are right to work out how to recover safely before experimenting
BTW half way through DL
Edit; it finished DLing, but my AV software quaranteened it.
Am uploading to dev host but their AV might not like it.
Edit; here you go http://d-h.st/ox8 take care AV said infected with ws.reputation.1 see http://community.norton.com/t5/Norton-I ... d-p/232155