How to identify the correct ROM or Kernel?

I just recently got a Nexus 7(2012) 3G: Asus Tablet. In CPU-Z it shows that it is called the "grouper"

What should I look for or how will I know which ROM to flash for my 3G version of Asus Nexus 7(2012)?
In the "Nexus 7 Android Development" section their are ROMs which mentions "grouper" but how will I know if it means the 3G version or the non-3G version?

I know that their is already a separate section called "Nexus 7 3G Android Development"

I am trying to understand if flashing the ROMs from the "Nexus 7 Android Development" instead of "Nexus 7 3G Android Development" will disable the 3G function or will it work like it does using the stock ROM?

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Understanding the correct KDZ file, help!

Hi,

I purchased the phone in the UK from the network carrier Vodafone. I have done a fair bit of research on the rooting and unrooting process mainly via videos and reading tutorials on XDA.

I would like to root the phone and gain super user access and install some Xposed modules but would also like to be able to unroot and flash back to a stock Vodafone firmware encase I need to claim under warranty. I have been trolling the internet to get the correct KDZ file and found this site (ttp://devtester.ro/projects/lg-firmwares/country.php?country=United+Kingdom). I believe that the correct firmware may be on here but am a little confused on what the suffix and software version means to be honest.

The reason for my confusion is that I updated the firmware to 6.0 Marshmallow through the LG bridge but when I now check my phones software version it states v20b-234-15. I assume this is right but from memory the first software version when I got the phone was something like H81510B_00.
I cant remember exactly what it was before unfortunately but the KDZ files I have found state H81510C_00 (Suffix - AVDFVK) and H81510C_00 (AVDFLR) and this does seem to make sense but I'm thinking it was B instead of C but and not 100% on that.

Do you think these KDZ files would be the correct one to flash back to encase I run in to some problems rooting?

I am also assuming that this KDZ is Android Lollipop and not Marshmallow so is it OK to use this to revert back from Marshmallow?

Thanks and any help would be much appreciated.

Ross

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