I still have the original cellular radio firmware my phone came with (at least, I think I do. The baseband version is I9000BVJJPG). However, I've changed ROMs many times, and am currently using the latest AOKP Milestone release.

Is it safe to install the latest radio image from http://samfirmware.com (PDA: I9000JIJVG, CSC: I9000CELJVG), if it is meant for 2.3.6, and I have ICS?

  • I'd guess yes in the case of a modem, but I don't really have anything to back that up. I'd be even more inclined to say it wouldn't hurt anything to try, but again I'm not 100% on that. Jul 3, 2012 at 16:40
  • Judging from my experience: It's generally safe. Did that with 4 different Xperia models, my HTC desire and a Moto Defy+. I faced some of those problems: interrupted calls, wifi problems, crashes, low signal, higher battery drain, bad 3G/UMTS/... data service. There's no best desire radio (depends on carrier + your prefs: drain vs. reliability), Xperia Roms tend to depend on specific (not always latest) radios. However: By trial & error, nothing was permanently broken. had to reflash a known good one or find a working one. Not sure about Samsung phones tho, beware of the infamous brick bug
    – ce4
    Jul 3, 2012 at 20:43
  • If it ain't broke, don't fix it -- why would you want to install an other baseband? Generally spoken, it should be safe to do so, but still I wouldn't do it without good reason (e.g. problems with GPS or WiFi, where a different baseband/radio image could help).
    – Izzy
    Jul 3, 2012 at 22:29
  • Izzy: seconded. Plus most if not all handset manufacturers don't release changelogs for that. Your Mod developer will tell you to update if it's needed as with 2011's Xperia line & ICS. forgot to mention that.
    – ce4
    Jul 3, 2012 at 22:36

1 Answer 1


You do not want to do that.

From my understanding, flashing an older radio than the one you currently have installed is a sure fire way to brick your phone.

Besides, the latest radios are always better. And so long as you are sticking with ICS, it is a very good idea to use the latest radio.

Like ce4 said, flash the radio recommended by whoever is making your ROM- And NEVER flash the same radio twice.

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