Need ROM for tablet T805s

[happyman2k]

Hi , I bough this tablet one month ago, I have a lot problem with this, a lot app freeze. So I would like to flash a new ROM, but I'm newbie so I need a help. I try make a backup with MTK Tool but got error 0 not nothing write to file. So backup error.

So if you guys have this kind of ROM please let's me know please.

Thanks ...

Here Info:

KERNEL: Linux version 3.4.67 (jenkins@buildserver7) (gcc version 4.7 (GCC) ) #1 SMP PREEMPT Fri Nov 21 19:19:10 CST 2014
CODENAME: REL
Mainboard: Q103
BRAND: T805s
CPU_ABI: armeabi-v7a
CPU_ABI2: armeabi
DEVICE: T805s
DISPLAY: Exynos 5420八核_三星T805s 4G通话版
FINGERPRINT: T805s/MID/T805s:4.4.2/KOT49H/1416568762:user/release-keys
HARDWARE: mt6592t
ID: KOT49H
TAGS: release-keys