What ROM should I use? (Can I have GSM or not?)

Louiejim

New member
Apr 25, 2017
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I have the Xoom MZ605. So it's an Everest. Right? However...

I've seen descriptions such as:
MZ601 = Xoom 3G + Wifi Europe model and it's called "Everest"
MZ600 = Xoom 3G + Wifi Verizon US model called "Stingray"
etc.
And I've seen people say that Wingray and Stingray will work on the MZ605, except I will have no 3G.

Well, question #1:
My unit does have a SIM card slot. I was even required to insert one before I could use the unit for the first time. After that, it was not required anymore. But the official firmware (upgraded OTA once to 4.0.4 by Motorola) never had any phone application, neither can I use the SIM card to have wireless internet. So I've been using WiFi only for years. Can I have mobile phone and internet connectivity with a CM firmware? Does this unit even have a GSM radio?

question #2:
There are too many CM firmwares and I am confused. Which ones would suit me? I've read somewhere that 4.4.4 is too slow and unstable, same as CM 11, and that CM 10 is recommended instead. But that page is 2 years old and things may have changed. Which ones do not cause any problem? I really need all the hardware features except HDMI.

TIA