I'll test out the full and let you know.. here's what happened to me before using the previous version. When I went from BS 1.75 to 1.8 without a wipe, I was able to apply the previous version over my 1.8 update. I had to wipe because going to 1.8 from 1.75 caused some battery issues.
When I fully wiped and reapplied 1.8 then smooth sense, that's when I got the boot loop.... I'll check back in with any info... Since I have my phone backed up, I'll apply the update 1.0.3 version on top right now and back it up. Then I'll wipe and see if I get that same boot loop coming from a fully wiped update.