Galaxy S3 I9305 – Steps to Update with Jellybean 4.1 Supreme Custom ROM Firmware

Supreme Custom ROM Firmware for Galaxy S3 GT I9305 smartphone has now arrived in style as it comes with a hell lot of modifications and enhancements which we will be checking out in the due course of this article. The best part of this firmware is that it comes with add on apps and also is rock stable custom ROM firmware. For applying this update, you will have to make sure that your phone is rooted. Please note that you will have to make sure that your device is I9305 model only and not the I9300 model of device. We have summed up the detailed features along with the screen captures on how this firmware looks like. Please note that this is not the Official firmware released by Samsung Electronics and is a custom ROM firmware. We are thankful to recognized XDA developer leamoor for coming up with this custom ROM firmware. Very soon there will be an all new firmware version be rolling out for Galaxy S3 I9305 which is dubbed as Jellybean 4.2. This firmware is based on the XXALJ7 build.

LTE 1 LTE 2 LTE 3

Features of Supreme Custom ROM Firmware:
based on jelly bean i9305 XXALJ7
Deodexed & Zipaligened
Rooted with superSu & binary
init.d support
Busybox,bash & nano
Sysrw & Sysro binaries
Improved ram management
Enhanced I/O performance
EXT4 file system tuneups
Faster application loading times

Quick Pre Requisites:

  • It’s mandatory that you backup all your data present in your device with the help of below mentioned steps as there is a probability that the data in your device might get erased or deleted. Don;t backupthe data with the help of KIES as it may not detect the device in the custom ROM firmware.

Disclaimer: Follow all the instructions mentioned in this article as if there is any damage caused due to not following instructions then we shall not be held liable or responsible. Just in case if you face any issues then we will try our level best to address the same.

  • For applying this update you need to ensure that your phone is rooted. To check on whether the firmware is rooted or not, you will have to check the same from the application called “Root Checker”. Download the Root Checker app from the Google PLAY Store and check with the same.
  • From the path “Settings > Applications > Development > USB debugging”, enable the USB Debugging, ensure that the USB debugging option is ticked. Minimum battery life should be at least 30% so as to make sure that it doesn’t get turned off in the middle of firmware update.

So assuming that you are done with all the above mentioned things, you can now head over to the next page where we have summed up a detailed guide on how to apply this firmware update.

  • Erick

    Yep! I find what you’re saying to be true, at least in the mrtoaijy of cases. Considering the years of research and developement, not to mention huge wads of cash, gone into developing both the hardware and the code to control it, some things are better left in-house. And I serioulsly doubt that your coffe would taste any better should your microwave oven run Linux. Nevertheless the call for free code has never been louder than it is today, arguably voices were louder in the sixties, but that was for free love / drugs / whatever, they did not care about code back then, that was military stuff. And, yes, the free code has not only a niche to fill but also a market, these are though largely concerned with exstensions to available technology. How about interfacing your server farm to a display system? Your RAID array to your printer? Hell, how about connecting your toaster to the coffee machine, and the fridge, and to your alarm clock for a timed, ready to eat brekfast?The point is that there is great benefit to be found in leaving your options open, now this may not necessarily mean open code but at least developing coherent standards. Cue the magic teenagers. As long as they have handles to grab they may yet be able to have your breakfast ready the minute you’re human enough get out of bed, but leaving your code open is like telleing the world Hey! Put me out of business will ya! .No seriously, I believe that the call for open code for systems, best developed in-house with complete documentation of the involved technologies is a cry from a generation with hubris, not to mention used to getting the way they want whenever they want it . Bloody communists , some may say. Well, I’m inclined to agree. If you find the technology to be inferior you’d be better off calling in some hardware professionals (if you’re not one of those as well), develop the product, insert your own code, and pretty soon you’ll be running to the patent office and fighting neverending court battles to retain your livelihood. You see, now you’re like that corporation you wanted to open their code for you, and you’re afraid of competitors buying some other teen’s knowledge to throw you out of business.Well here’s a tip. Let your hobby stay a hobby. If you’re confident enough that your solution is better, go into business and prove that it is.And if your proof is good enough I may one day wake up to a set breakfast without having to hire a Polish maid.Oh yeah, I’d probably still be late for work