Android 4.3 for Samsung Galaxy S4 (GT-I9505) LTE is coming very soon but if you can’t wait and brave enough there is a latest leak Android 4.3 for Galaxy s4 with build date of October 8 (I9505XXUEMJ3_I9505OLBEMJ2_OLB). The good guys from Sammobile.com tested the leak and it has some minor changes from the first leak and VERY stable. If you want to try this new build (I9505XXUEMJ3) follow the instruction below.
Tip: Carrier branded Galaxy S4 like from Globe & Smart can be updated to this version but will void your warranty but if you perform NanDROID Backup (rooted) you can keep an untouched image of your device OS and if you want to warranty it just restore the stock image.
Note: Installing firmware from leak sources will void your warranty. Make sure you have a NANDROID Backup just in case you like to restore it to stock/non-rooted. For those under a carrier you will also void your warranty and NANDROID Backup is recommeded.
How to Update Samsung Galaxy S4 to Android 4.3
Model: GT-I9505 Country: Open Asia Version: Android 4.3 Changelist: 1840064 Build date: Tue, 8 Oct 2013 23:29:05 +0000 Product Code: OLB PDA: I9505XXUEMJ3 CSC: I9505OLBEMJ2 MODEM: I9505XXUEMJ3 Download: I9505XXUEMJ3_I9505OLBEMJ2_OLB.zip
This firmware will WIPE your device (Perform a backup before flashing)
This test firmware will NOT increase your binary counter NOR void your warranty.
This test firmware will NOT trigger your KNOX Warranty Counter (If it’s 0×0 before flashing, it will remain 0×0 after flashing and vice versa).
This test firmware is a pre-release firmware and not official from Samsung.
We have fully tested this firmware and this firmware works perfectly as any other official firmware.