How to downgrade to 4.5.3
1- Power off your amazon tab hd6/7 4th genration and reboot to recovery by pressing volume + and power button
2- Open Cmd and enter command
adb sideload [drag downloaded bin file here]
Download 4.5.3
https://kindle-fire-updates.s3.amazonaws.com/update-kindle-20.4.5.3_user_453011120.bin
How to Root 4.5.3
1- install Kingroot
2- And root your phone Easily
Download kingroot
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How to flash Twrp+cm11
1- Copy Recovery+cm11+gapps to phone
2- install Flashify apk
3- Open Flashify and Select Flash Recovery and choose the recovery.img where you kept and flash
4- After flashing twrp it will ask for reboot then Select reboot
5- After Rebooting to twrp wipe cache and install Cm11,gapps And select system Reboot.
All done
Enjoy
Download Flashify apk
Flashify 1.9.2 APK Download by Christian Göllner - APKMirror
Download twrp
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Download cm11
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Download gapps
Google Drive - Virus scan warning
Don't forget thanx
