So I followed the stickied guide to downgrade, which worked perfectly. I'm typing this on my boost volt, z3 and rooted. However, the process left my phone seemingly with no carrier. I can make calls and send texts, but have no data. (Currently using home Wi-Fi). I have no boost mobile apps installed after the flash, and the phone is not locked into any specific service, seemingly (is that what jail breaking is?) I have NOT installed the modified z4 update yet. I used a friends computer to get as far as I have, since I have no computer of my own. So I'm wondering if I should flash the modified update, and if that will fix it? Alternatively, since I'm now rooted, I was thinking I could just call boost and get them to help me reset my data service. But then I need to be careful not to update to the real z4... Any advice is appreciated!