[Q] changing stock rom ?

hi there ppl,



im new to this device, just got it few days ago, but my model is the 4g/LTE/ G7105 . and it comes with JB 4.3



so i've search google, you tube, xda, and few more forums and found nothing on how to root my device. i know that there is a way to flash stock KK 4.4.2 firmware of other region from sammobile website.

i really dont care about the warrenty issue, mostly i wish to debloat the stock rom and flash custom recovery.



but i have few question if someone can help



1. i rather stay with JB with this device, so if anyone have this device G7105 rooting methood and did manage to root it pls share .



2.if i do decide to flash stock KK what happens with knoks, will it have effect on device (except the ticker which i dont mind) if i want to flash stock JB back ?



3. if i flash stock KK of region like france germany or greece, and my region is israel, will it have effect on my 4g/LTE connection and other network and gps problem?



4. last question, can i change modem if the above question mean i do have problems ?





i have galaxy s3 also but i was a lot easier to handle rooting, and since its a bit of different ways i dont like to mess hardbrick my device already.





thanks for all helpers

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