So I stupidly ordered a chinese made Android tablet online. The model number is Onda v701s. It has 4.2.2 OS but it seems to be really unstable, even from the get go. What I would love to do is to completely get rid of what it has and replace it with the OS from my phone (LG Optimus L9). My phone is way more stable and doesnt have apps/programs quick working all the time. My question then is this: Is there a way to completely get rid of the current ROM and replace it with a more stable one like the stock Samsung S4 ROM, or the stock ROM from my LG? Thanks in advance for your help.