Problems updating Hyundai T7s tablet to jelly bean 4.2
I'm encountering some problems when i'm trying to update my Hyundai T7S tablet to the official jelly bean 4.2 ROM.
I've the update from the Hyundai website (hyundai-digital .cn). This download comes in a .rar file. I knew it would be impossible, but tried anyway to flash this file from the SD-card. But to make it work this way, the update should be a .zip-file.
In the .rar file are 15 files, some of them are .bin and .img files. And I've not the knowledge what I can do with these files. Unfortunately the support guide of Hyundai can not be opened and two hours googling didn't help me out. So here's my question:
Is it possible to convert the .rar file into a .zip file and flesh this file? Or can I flash the rar-file in some way?
ps. i had the full links copied in my message, but since this is my first post, i cannot post links. Sorry for that!