Root [2nd Gen] The best way to Root & best version of CM 10 for KF2

[ray1126]

Follow the direction here to root and install TWRP --> Amazon KF2 (v.10.4.3 & v10.4.6) - Install CyanogenMod - xda-developers
Next instead of installing the nightly version of CM 10 I have tested several of them and found that CM-10.1.3 RC2 to be the most stable as long as you install it correctly another words you need to do the wipes of CACH /DELVIC CACH also you must do a factory reset all while in TWRP recovery mode also don't forget to install the latest gapp for your version of CM.
Here is the direct download link to CM 10.1.3 RC2 --> http://download.cyanogenmod.org/get/jenkins/40541/cm-10.1.3-RC2-otter2.zip
Here is the link for gapp --> Goo.im Downloads - Browsing gapps

 

[ray1126]

Also I would suggest to everyone who wants to improve there KF2 to spend the 9 dollars through Ebay and get a fastboot cable ---> Kindle Factory Cable Get to Fastboot Mode on Kindle Fire Kindle Fire HD | eBay