Installing stock rom to my tablet. Please help

[pradeep1987]

Hello

I have karbonn smart tab 10 tablet. It is not rooted. I bought it 1 year back, it was working very well, but now it is lagging and slow in everything. So i searched online, and many told me to install stock rom again. So i downloaded stock rom. It is in .rar format. I cannot install the rom, twrp recovery is always showing as E:\ unable to mount\ media. Also sometimes TWRP shows as partition problem. something like that. i don't understand. please some one help me. how to install stock rom and i also need to remove twrp to stock recovery. Please reply me.

 

[someone755]

For speeding the thing up, try doing a factory reset before reinstalling the stock firmware.
In any case, be sure to make a backup of all your data before you mess with the OS!

If you don't mind the question though, why have TWRP and not have root?

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Anyways, time to get down to business:
I found these stock images, but they only work on Version 1 of your tablet model: http://forum.xda-developers.com/showpost.php?p=38211154&postcount=274
Make sure to update your TWRP recovery to the newest available version, copy the .zip downloaded from the link above and send it to your tablet's internal storage. Make a factory reset, reboot into recovery, wipe /data /cache and /dalvik-cache from the "Wipe" menu, then flash the .zip file you downloaded from the above link. Reboot and it should be fine.
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If you ever intend to buy an Android device again, I'll give you this one tip to make it perform well; do NOT buy MediaTek devices. They're sluggish and receive no software updates. If there is a device with an Intel or Qualcomm chip inside available, go for it rather than anything related to MediaTek.