Tuesday, June 21, 2016

Did I 'skip' a bunch of updates?/ What ROM vers# should I flash to?(firmware problem)

Hi all, I posted a question in the giant general "ask question here" thread but I'm thinking this might be more nuanced than I realize after I saw that thread about downgrading=brick.
I've got Z00A, I bought it new a month or two ago--'just tested' seller said but it looks like it was used up until october of last year. It was running android 5 and CM 12.1 (I think) and had TWRP 2.7 (I think). When setting it up I saw update about an update "CM13... nightly". Installed it, booted phone and it had no gapps and tried too many half assed solutions so I started over and installed TWRP 3, got Open Gapps and CM13-0522 and started over. Seemed to work great but then I noticed stuff like the camera would freeze or take pics that would come out a blank green screen and the mobile data connection almost never worked (though I'm on new carrier) and a few other problems. Is it possible that since I went from CM12 (and presumably no updates since october) straight to CM13-0522-nightly that I missed or somehow 'skipped' a bunch of firmware updates? Does the latest version not include the updates from previous versions?
I was going to try rolling back to stock via one of the ASUS ROMS but I have no idea what version to get because I cannot determine what I currently have or what the phone had to begin with (version as in "V2.20.##.###"). Also, I don't think I installed any ASUS rom before----I just installed CM13 and OpenGapps. Then I see posts about sideloading the ASUS firmware roms in regard to users trying to revert/reinstall firmware: is this what I should be doing?
I read the FAQ thread and searched what I could but it has only left me more confused. I'm fairly technically apt but cell phones are not at all my usual foray so any help is greatly appreciated.


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