I want to put paranoid android on my galaxy s3 i9300, I have tried and been unsuccessful

Here is the link to where I got the download from; XDA Community

Can someone give me clear instructions as to what exactly I have to do to put this custom rom on my phone please, Thanks

  • Did you root your device? Have you installed a custom recovery (Like TWRP or Clockworkmod)? What does 'been unsuccessful' mean specifically, is there errors? Can you please provide more information in your question about what you have done, and what has happened?
    – RossC
    Jul 8, 2014 at 7:52
  • Hi, I rooted my device with superSU, however, I found out that apparently it wasn't necessary Unsure of what a custom recovery is, could you explain or provide link please The error was "bad signing key" or something along those lines, can't remember exact words The steps I followed was wipe phone, root phone, put into recovery mode, wipe phone and cache, install zip from SD card (i put the Zip file on my external SD card) and when it started installing the error message appears and installation is unsuccessful, Thanks, @RossC
    – Sjharrison
    Jul 8, 2014 at 7:57
  • Ok I've added an answer, hopefully it's all you need, but please do ask questions and I'll modify my answer as we go!
    – RossC
    Jul 8, 2014 at 8:06

1 Answer 1


A signature error is often caused by trying to install custom firmware (the ROM) with the stock revovery. The stock recovery will only install a factory image for the device, signed by the manufacturer. This means you can only install stock firmware with it. So you need a custom recovery, something like Clockworkmod or TWRP recovery.

Note: do at your own risk, and ensure you have the correct device model for this!


This is the link to TWRP for the Galaxy S3.

This is the link to Clockworkmod (CWM) recovery for Galaxy S3

How to flash a new recovery with Odin:

Step 1: Prepare Odin for Flash

Make sure Auto Reboot and F. Reset are checked, then click the PDA button and load your .tar file.

Step 2: Go into Download Mode on Your GS3

You can do this by powering off your phone, and power back on by holding Volume Down + Home + Power.

If you are on a custom ROM, do not do this by holding the Power button, select Reboot, and select Download Mode. It can cause issues in certain models in Odin.

Step 3: Flash TWRP

Press the Start button on Odin. Then watch your phone do its thing and reboot.

That's it, you now have the latest and greatest recovery available for the Samsung Galaxy S3.

Before installing a new ROM ensure you make a full backup in your new recovery.

After you install the recovery, boot into it like before, then wipe Cache / Data and install your new ROM.

  • Thanks @RossC for the instructions, just to be clear the steps i took to install the rom was correct and should be repeated? and is there a personal preference you have between ClockWorkMod and TWRP? Thanks
    – Sjharrison
    Jul 8, 2014 at 8:09
  • You did everything correct installing the ROM, just via the wrong recovery! They're both very respected recoverys to be honest, and there's not much different. Just read over your ROM and see if they recommend one, you get the odd rare incompatability, but both should be fine! Oh it's worth saying: read the ROM 'how to install' again, and get everything nice and clear before you proceed. Ensure you have a backup or a stock rom you can flash if there are any hiccups. And remember you can install another ROM if P.A. is causing any hassle!
    – RossC
    Jul 8, 2014 at 8:12
  • Thank You, I will let you know how it goes and if I encounter any problems along the way, I appreciate your help!
    – Sjharrison
    Jul 8, 2014 at 8:17
  • 1
    Hi @RossC I managed to get it working, I installed a newer version of CWM and it worked fine, Thanks for all your help
    – Sjharrison
    Jul 8, 2014 at 9:54
  • 1
    Loved the rom I tried, couldn't be happier, except I couldn't get my gear 2 neo's software (Gear Manager) on there so unfortunately had to resort back to my stock rom, however got a anotherGS3 which I'm putting roms onto to see which is my favourite for future
    – Sjharrison
    Jul 9, 2014 at 12:52

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