Yes, I tried all the things from this one: Cannot install ADB for Kindle Fire HD
I have the 2012 Kindle Fire 7" (NOT HD, 2ND GEN - Otter2)
Trying to root, eventually install Cyanogen.
I have:
--Android SDK and adb running fine for other devices
--Windows host
I have tried:
--Uninstalling the drivers and reinstalling them, ensuring "Enable ADB" is selected in the Security menu
--drivers through the sdk manager, drivers direct from amazon, drivers randomly downloaded from all over the internet
--following various guides painstakingly (e.g. https://developer.amazon.com/public/resources/development-tools/ide-tools/tech-docs/05-setting-up-your-kindle-fire-tablet-for-testing or http://www.technipages.com/kindle-fire-enable-usb-debugging or http://forum.xda-developers.com/showthread.php?t=2071010 or http://forum.xda-developers.com/showthread.php?t=2069117)
--manually editing adb_usb.ini to include 0X1949 - except that by the time I tried this, it already included it
What I get, every time:
--Device Manager sees it as a "Portable Device" > "Kindle"
--I don't get "Android Composite ADB Interface" ever
--'adb devices' command doesn't see the Kindle
Help?
Note, mostly note-to-self but just in case anyone else came across this... I was later able to switch this device from the deprecated CyanogenMod to Lineage OS by following this guide and starting straight at Step 6: https://github.com/jsheradin/otter2_misc/blob/master/README.md https://github.com/jsheradin/android_device_amazon_otter2/releases/latest
This time around, I never got adb devices to recognize the thing outside of twrp, but luckily I didn't need it outside of twrp.
And reminder, the end of the comment thread above and all related efforts ended here: "gave up, got a fastboot cable, everything is peachy. If anyone else runs into this problem and is reading this, it's probably not worth your time to hope there's a fix. And don't try Tweezermod... you'll get a red-screened brick." i.e. don't bother, just get the cable.