Spent all day trying different root techniques. Unable to root but along the way got into fastboot and recovery.
ADB
Drivers:
https://developer.amazon.com/public/resources/development-tools/ide-tools/tech-docs/05-setting-up-your-kindle-fire-tablet-for-testing
FASTBOOT
use the adb command
adb reboot bootloader
and the tablet will reboot into fastboot mode
RECOVERY (Factory)
use the adb command
adb reboot recovery
and the tablet will reboot into stock recovery mode
ADB
Drivers:
https://developer.amazon.com/public/resources/development-tools/ide-tools/tech-docs/05-setting-up-your-kindle-fire-tablet-for-testing
FASTBOOT
use the adb command
adb reboot bootloader
and the tablet will reboot into fastboot mode
RECOVERY (Factory)
use the adb command
adb reboot recovery
and the tablet will reboot into stock recovery mode