Looks like I have the developer version too..is a 32 gig, silver one. Is there any way to tell what hardware I have? I'd like to root it, but I suspect not knowing what hardware I have would be a bad thing when it comes to flashing...I don't know which version of TWRP or CWM to use, at least.
Any help would be appreciated
Here's what hboot says..which version of recovery do I use with this?
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As long as you unlock the bootloader - you should be able to root just fine
If you google this: twrp htc one max - you'll see links to XDA Forum threads with information about the recovery that is compatible with your phone...
Also can you please confirm that you're able to get AT&T LTE where you are with the phone that you purchased form Amazon?