Upgrade Firmware

• Backup:Backup all your data which includes apps,contacts,photos videos etc everything to computer or any cloud storage as flashing Cyanogenmod cm 12.1custom rom on samsung galaxy s4 active I9295 will erase all your data.
• Battery: Charge your galaxy s4 active I9295 to at least 90% so that you wont encounter any battery related issues while flashing this.
• Backup Efs partitions: Backup all your efs partition of your samsung galaxy s4 active on current rom.If you loose signal you can just restore it back.
• Lock Gps:Lock your gps position on your current rom.If you use this a lot then you have to lock it so that it could work even after flashing other roms. It's easy to lock gps .Turn on gps in settings and find your current location in google maps and now now have locked on to gps.
• Custom recovery: You need a custom recovery like twrp installed on your active I9295.Without it you can not flash this at all.
• Downloads: Cyanogenmod 12.1 rom for jactivelte and google apps. Transfer them to internal storage of your device. 

Install cyanogenmod 12.1 custom rom on galaxy s4 active I9295:

• Theme engine: Theme engine is from the cyanogenmod custom rom which basically changes the look user interface from lock screen  to ring tones all the way up to boot animations.The speciality of the theme engine is the ability to choose individual elements of every theme you have installed.So you like the ring tons and wallpapers of one theme and icons of other theme then you can have them at a time.Just open the theme chooser and you will understand how to do it.
  
• Performance control:A default CPU manager app to control frequencies and governors . You can adjust cpu frequencies and also set them on boot too.


• Trebuchet: This is the default launcher that ships with cyanogenmod.But if you flash gapps then you might loose this.It doesn't have too many features like nova or other launchers but its simple and fast.
• Software Updates: Cyanogenmod is usually available in three types one s nightlies which gets updated with new features every night and are quite stable for daily usage.second one is the snapchat which is monthly build version which will be stable version and other one is the release candidate.Some times nightlies are considered must stable than the snapshots. As of now we have android lollipop 5.1.1  in form on CM 12.1. 
• Status bar Tweaks:Status bar has lot of tweaks which include a brightness slider.Slide in status bar to adjust brightness of the screen.Double tap on status bar to sleep device and also network speed indicator for on going traffic info.
• If you are missing root functionality or all your root apps are not working properly then to developer settings and check if root permissions are set properly.

1. Download Cyanogenmod for galaxy s4 active I9295 and Gapps transfer it to sdcard or internal storage of device.
2. Power of the device completely.
3. Press volume up,power button and home key simultaneously and once you see boot loader screen release buttons.
4. Using volume down as a navigation button move to recovery and click on power button to confirm action.
5. Once you are in twrp backup existing rom first.It might about 5 minutes for backup to complete.
6. Wipe data,cache and dalvik cache.You may not need to wipe system.
7. Flash galaxy  s4 active rom zip file which you have downloaded and then gapps.
8. Reboot to system.Wait for atleast 15 minutes for initial boot to complete and once done you can explore its features.
9. If s4 active fails to boot Remove battery and put it back.Reboot it to recovery and this wipe system too and flash them again.