Google Nexus S 4G

How to Update Nexus S 4G with JRN84D Jellybean 4.1 Firmware – Tutorial

Jellybean LogoAfter Samsung Galaxy Nexus, Nexus 7 Tab and Asus Transformer T300 which was recently updated with the Jellybean 4.1 update, an all-new update has arrived for Nexus S 4G. Please note that this is not an Official firmware released by Google Inc. but is a leaked port which is still in the early stages. There is no estimated time on by when there will be an official release. Over a period of this article we will be checking out on what are the features which work in this custom ROM firmware and also the pre requisites followed by the detailed guide in the next page.

For applying this firmware, you need to ensure that your nexus S 4G device is rooted and once rooted, you need to install the custom recovery image in your device which is like Clock Work mod recovery. Also, be informed that once the device is rooted, the warranty will get void. The only way with which the warranty can be reclaimed is by re applying the factory firmware update which we will be coming up with very shortly. It was the last time when we saw on how you can update with the leaked version of Jellybean release and this release comes just after the earlier Jellybean release which we saw just few days back.

Features of Jellybean 4.1.1 for Galaxy Nexus s 4G:


  • audio
  • voice service
  • 3G
  • WIFI
  • apps2sd
  • Google Now (includes voice search)
  • bluetooth media (all other bt works)
  • project butter
  • everything not listed below

Not working:

  • WiMax/4G
  • Face Unlock
  • GPS lock (navigation works…just no GPS signal)

Data in your Nexus S 4G should be backed up with the help of below mentioned steps and not with any of the PC Suites. Just in case if the data gets lost or corrupted, the same can be restored easily.

SMS – Use “SMS Backup & Restore app”,
Contacts – Sync with the Gmail application,
Call Log –Call Log and Restore
Images, Songs, Videos, Files – Copy to internal / External SD Card,
APN and MMS Settings – Note down from the path “Applications > Settings > Wireless and Network > Mobile Networks > Access Point Names

Minimum battery life should be at least 60% plus so as to make sure that your Nexus S 4G device doesn’t get turned Off in the middle of firmware update.

Disclaimer: We should not be held responsible for any damage happened to your device due to not following of instructions. This update is strictly for Nexus S 4G models and not for any other Nexus variants. If you still apply for any other S2 variant, it may brick the device.

So assuming that you have followed all the instructions, you can now proceed to the next page where we have summed up a detailed tutorial on how to update with this firmware.

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  1. bambang harjono

    August 23, 2012 at 12:58 pm

    Thanks good job, android advises
    my nexus (imm76K) run with 4.1. and JRN84D rom. double thumb

  2. bambang harjono

    August 22, 2012 at 5:04 am

    before update, what I must unlock bootloader and root the phone ?

  3. Ray L Jackson Sr

    July 14, 2012 at 1:35 am

    Cool!  Thanks!  Bout to try it now!

  4. Ray L Jackson Sr

    July 14, 2012 at 1:34 am

    Thanks! About to try it now!

  5. Ray L Jackson Sr

    July 14, 2012 at 1:34 am

    Thanks! About to try it now!

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