Here is another stable and fastAndroid 5.1 custom ROM for Galaxy S4 I9505. Based on official firmware, here is how you can update Samsung Galaxy S4 I9505 toImperium Android 5.1custom ROM.

Features of Imperium Android 5.1 custom ROM for Galaxy S4 I9505:

Based on the official brasilian FW I9505JVUHOC1DeodexedZipalignedRooted with SuperSUBusyboxAroma installer

-Also, read: Galaxy S6 edge Tips to Help You Take the Best Out of Your Curved Phone

Prerequisites to update Galaxy S4 i9505 to Android 5.1 Imperium:

Backup any important datafrom your Samsung Galaxy S4 I9505 as a complete wipe will be required during the flashing process.Enable USB debugging option on your device:Settings>DevelopmentOptions>USB debugging.Samsung Galaxy S4 I9505 must berooted, unlocked and installed with a recovery tool likeTWRPorCWM.Your device must be charged to at least 60% of power.

Note:this tutorial is focused on Samsung Galaxy S4 i9505; kindly do not try this guide on otherAndroid&Samsungdevices.

How to flash ImperiumAndroid 5.1 custom ROM for Galaxy S4 I9505:

Required files: download Imperium Android 5.1 Lollipop custom firmware for Galaxy S4 fromhereand save it on your computer. Do not extract the contents. Also download Google Apps Package.

Connect yourGalaxyS4 to your computer using a USB cable and copy the zip file to your phone’s SD card.Disconnect the USB cord andpower off your Galaxy S4.Boot it into recovery mode: switch the phone on while pressing and holding Volume Up + Home + Power buttonssimultaneously.Perform aNandroid backupof your current OS:Backup>backup and restoreon ClockworkMod recovery.Wipe data task: from CWM recovery menu, selectwipe data / factory resetand confirm the process.From recovery menu, selectinstall zip from sdcardfollowed bychoose zip from sdcard.Locate the Imperium Android 5.1 Lollipopcustom firmware and confirm the flashing process.Return back to main recovery menu and reboot yourGalaxyS4 I9505into the new custom ROM. First boot takes a good 5 minutes so please be patient.

Enjoy the latest Lollipop!