1. Yes you have to root the stock S3 rom with latest Odin also can.
2. Yes i have tested the Blisspop rom not bad actually better than Resurrection Remix.

Tried to root my S3, failed to install the TWRP. Don't know what is wrong with it.

odin3 v1.85
twrp-2.8.6.1-i9300.tar

I dl-ed these two version.

how you flash those tar?

I downloaded Odin and the twrp tar file.

Switch off my phone -> vol down+power+home -> download page -> connect usb -> run odin -> attach the twrp tar file -> phone reboot -> vol up+power+home -> no comment and goes into the standard recovery page

What did i do wrong...

you put tar file at PDA tab?

Yes... I was following the tutorial on YouTube.

mind you that tar file was for recovery... for root i think you need SuperSU flash-able zip

https://www.youtube.com/watch?v=dsGEXy2MDB8

I was following this tutorial. I've downloaded the SuperSU file as well, but i didn't manage to successfully installing the recovery...

Do i have to flash the SuperSU before i flash recovery???

try install Philz Touch Recovery...

ORZ

Do I have to follow the same process, using odin and download a tar file as well?

yep...

https://www.dropbox.com/s/irolo6rp8wh5ibf/P...3%2039%2034.png
This is how my recovery page look like.

This post has been edited by XJShinoda: Jul 8 2015, 09:45 PM

thats standard recovery

Tried on the other recovery that you suggested as well... Didn't work for me. Hmm

https://www.dropbox.com/s/fw0qdirhl1b39hf/odin.jpg?dl=0

This is how the odin page look like. Looking at the log, i suspect that "removed" before the "completed" is the reason i failed. But i didn't remove the cable in the process. Hmm

This post has been edited by XJShinoda: Jul 8 2015, 10:11 PM

that tar.md5 how many MB? should be around 7 to 8mb

It was 7.45mb

All the recovery tar file i dl-ed were 7mb+.

P/S: Sorry for all the questions...

strange...
sorry, thats all i can help...
hope @surefire v LED can help for the rest

Thank you so much for the help! I appreciate it! My S3 is just acting weird, don't know what is wrong. hmm...

Can you please download the latest Odin.
Don't use v.1.85

Agree. That version is too old already.