List of Pre Requisites to be followed:
- Before proceeding, backup all the data which is there in your phone which you can do the same from the below mentioned tips.
Text messages – Use “SMS Backup & Restore app”,
Phone Contacts – Sync with the Gmail application,
Call Log – Call Log and Restore
Pictures, Music, Videos, Files etc.– Copy to internal / External SD Card,
Internet & MMS Settings – Backup all the settings from the path “Applications > Settings > Wireless and Network > Mobile Networks > Access Point Names”
- Before proceeding, you need to be first check whether you are on the latest version of firmware which is rooted XXJVT version or not. If you are not on the same then you need to update and root the same by following the below mentioned links.
Tip: To know on what version of firmware you are currently on then you need to go to path “Settings > About Phone > Firmware Version” where you will find the version of Android OS where it will show Gingerbread XXJVT 2.3.5 version.
- After this you will have to close all the tools like Security Suites, Firewall tools and also the KIES PC Suite as these tools generally tend to interrupt the process of firmware update. Disable the USB Debugging from the path “Settings > Applications > Development > USB debugging”.
Special instructions to users on Custom ROMs:
If you are any of the custom ROMs then you need to first turn Off the phone so that you can then enter into the recovery mode by pressing Volume UP on Volume Down Key + OK button, and holding both simultaneously press the Power Button.
In the recovery mode, you will find an option called the “advanced” tools, select the same and disable the Voodoo options if there are any and after that also select the option of “Dalvik Cache” and also clear the battery stats by selecting the respective option.
Now, let’s proceed to the next page where we will see on the instructions on how to apply this all new firmware of Ice Cream Sandwich.