Tips & Tutorials

Update Nexus 7 to Codename Android 3.5 Custom Firmware

Nexus 7 has a number of custom ROMs available, but not all of them are good enough to be used. We always try to cover the best custom firmwares available that are perfect by performance and are very stable as well with no bugs. Codename Android 3.5.0 is one of the best ROMs we know for the Nexus 7 tablet. You can easily install Codename Android 3.5 (JRO03L based) on Nexus 7.

In this tutorial, we will tell you how to install Codename Android 3.5 custom ROM on Nexus 7 with complete steps and how to backup your tablet. Your tablet should be rooted and ClockworkMod recovery should be installed. Let’s get on with the tutorial now and make sure you backup your tablet as given below. You will have to wipe all your data.

Disclaimer: All the tools, mods or ROMs mentioned below belong to their respective owners/developers. We ( or the developers are not to be held responsible if you damage or brick your device. We don’t have you on gun point to try out this tutorial 😉

Codename Android 3.5 Features:

  • Based off of Clean Android 4.1.1 Rev4 (JRO03L)
  • File Manager Included
  • T-mobile Theme Manager (tmobile, CyanogenMod, xoomdev)
  • T9 Dialer/Landscape/Dialpad Settings (CyanogenMod)
  • Trebuchet Custom Launcher (CyanogenMod)
  • Ability to set custom ringtone delay (in phone settings – Netboy)
  • Framework: added support for caller name display (kenshin)
  • Framework: added HSPA+ support (shows H+ icon on status bar when connected to hspa+ – Bajee11)
  • Framework: ability to set custom carrier label (Netboy)
  • Browser: option open tab in incognito mode (Arham Jamal)
  • Browser: option to close all other tabs (Arham Jamal)
  • Browser: unhid the user agent settings
  • DeskClock: added stopwatch and countdown timer (Jorge Ruesga)
  • DeskClock: added settings to do nothing/snooze/dismiss and alarm by flipping the device (maurodec)
  • DeskClock: you can set an alarm to switch your profile (jorge ruesga)
  • … and a LOT more!

Make sure you have installed all your USB drivers for the Nexus 7 tablet to connect it with the computer. Download ASUS Nexus 7 USB drivers! Apart from just the USB drivers, there are a few more things that you need to take care of.

1. You need to enable USB debugging mode. This helps to connect your Android phone/tablet with the PC. See here: How to Enable USB Debugging.

2. Your tablet battery should be 80-85% charged. If your phone goes off suddenly because of battery, during flashing ROMs or installing mods and updates — your phone might go dead permanently. See here: How to Check Battery Percentage.

3. Backup all your important data that you might need as soon as your flash a new ROM, or make a backup for just in case, you never know when anything might go wrong. See below on how to backup data:

4. Your tablet should be factory unlocked. Additional instructions for locked Android devices will be added in the tutorial for unlocking devices.

Now, let’s proceed with the tutorial on the next page and update Nexus 7 tablet to Codename Android 3.5 (JRO03L) custom ROM.