I first started noticing some strange and weird bugs, like I can't lock the screen, notifications never get cleared, it felt like the phone got frozen.
It is known for sure that after I installed the firmware, the recovery mod that I had is gone and replaced with stock one, so I tried flashing a .tar file for rooting my phone (It was actually to use via recovery, not via flash... I lacked information back then), after flashing it, I could boot into recovery mode no more. Even after flashing the 4.4.2 firmware again, I even saw it installing a "recovery.img" file but with no good. When I try to boot into recovery mode it writes at the top "Could not do normal boot" and then "ODIN Mode" and the rest as I used to see before.
Then I started searching the web for solutions relating to the bugs I noticed earlier, found a thread instructing to remove battery, SIM card and microSD card, then re-installing them again except the microSD card... It actually fixed the stated bugs! But I still don't feel relaxed. I want to fix this (idk if this is called "bricked" or no!) issue about recovery mode, and get back to 4.3 as this scared me as f**k.
NOTE: I flashed CWM and TWRP .tar files that I already had, to no avail.