Upgrade Firmware

Update your samsung galaxy s3 I9300 to android lollipop by flashing Blisspop custom rom.Samsung galaxy s3 is the most popular device of samsung which was launched back in 2012.It sports a 4.8 inch display with hd resolution and is protected by corning gorilla glass 2.It comes with a exynos 4412 quadcore processor clocked at 1.2ghz coupled with 1gb of ram.Internal storage on this device is 16 gb and expandable with microsd card slot.Primary camera on this device is 8mp while secondary camera is  1.9mp.Finally it is powered by a 2100mah battery.

Though samsung rolled out software updated eventually they stopped ota updates due to incompatibility.This didn't let down users to get lollipop update in the form of custom rom.Since this device is old we have lot of custom roms available for galaxy s3 i9300. If you have custom recovery installed on your device then you can update your samsung galaxy s3 i9300 to lollipop with blisspop custom rom.
This post is specific to device with model number i9300 so check your device model number first.To do this go to settings and then to about device.You will find your galaxy s3 model number confirm it as I9300.
Prerequisites:

Blisspop custom rom for samsung galaxy s3 i9300:

Blisspop custom rom:
Blisspop custom rom is based on cyanogenmod 12.1 rom with lot of added features with improved performance and customisation.This rom offers all the features that cyanogenmod 12.1 has to offer and also there are lot of added features from other popular roms too.This rom offer wide range of features from status bar to lockscreen.
Features of Blisspop for s3 i9300:

• Statusbar tweaks: Status bar tweaks include notification count,network speed indicator,double tap to sleep ,brightness control and weather in status bar header.
• Recents panel tweaks:The recent panel has a button to clear all the tasks and omni switch is present is present as an alternative to traditional recent menu.
• Gesture anywhere:Gesture any where is also available which  makes it easy for you to launch apps with gestures instead of returning to home screen and app drawer to launch apps.
• App circle:In addition to this app circle bar is also present which makes it too easy to launch apps with just a swipe from the edge of the screen.


• Soft Navigation controls:You can enable soft keys too if you like them and also set the dimension  of the navigation keys and also you can define custom actions.
• Capacitive buttons: hardware keys have an option to adjust back light duration of the button and now you you can do various things with the just home key like accessing a call with just a tap on home key , wake the device and also you can set custom action for double tapping on home key.
• Power button: Press and hold power button you will have various options including soft boot ,reboot recovery ,screen reorder,air plane mode,screen shot,user switch and lot more,
• Animation control: You can set custom animation for app opening and closing,scrolling up and down.There are lot of animations available to choose from.
• Display and light:This includes live display,adaptive display,rotation mods,wake device on plugging in charger or usb cable,Custom DPI and change font size according to your needs.
• Cyanogenmod Camera app is built in.
• Other mods include audio Fx equaliser,security options,bliss pop ota updates and all standard android features.

Flash Blisspop rom using Twrp or CWM Recovery:

1. Download the rom and Gapps and transfer it to sdcard or internal storage of device.
2. Power of the device completely and wait for few seconds to confirm that it is off.
3. Press volume up,Home key and power button 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 or cwm recovery backup existing rom first.Please make a backup for sure if you don't have one.Don't even try to take risk of flashing without backup if you dont know how to recovery a device from soft boot.
6. Wipe data,cache and dalvik cache and wipe system partition too.
7. Flash rom and it takes about 3 minutes or so for it to complete.
8. Flash Gapps if you cant live without them.
9. Reboot and wait for at least 15 minutes for initial boot .

Troubleshoot:

• Unable to flash rom: If you are using Twrp recovery and got an error message while flashing then flash it via CWM or Philz recovery.
•  Force closes: If you are experiencing too many force closes you have to wipe cache , dalvik cache or do a factory reset in recovery.
• Bootloop: If your galaxy s3 fails to boot even after 20 minutes then its a boot loop.Just remove battery and wait for few seconds.Put back the battery and enter recovery using button combinations and restore backup.If you don't have backup then you have to side load other roms and flash them.

FInal words on blisspop rom for galaxy s3 i9300: