[7" Kindle Fire HD Themes and Apps] galearned:
Installing 10.1 from Kindle OS 7.4.6

ch1ller: Good evening:

You will be just fine installing TWRP and using the 7.4.3 freedom boot image.

Once you have either manually installed TWRP or, used Fireflash11, you will have instaledl Stack over ride, freedom boot 7.4.3, 7.2.3 bootloader, et al. As I indicated, you will not be able to boot up into the Kindle 7.4.6 OS because of 7.4.3 and 7.4.6 mismatch.....

However, you indicated you want install CM 10.1 or 10.2 so, you are all set.

[[You can always boot up into Recovery and then install 7.4.3OS.zip or CM 10.1 Just follow the instructions below.....]]

1: Install Fireflash11 You can download the APK to the SD card and then use the browser to install.

Make sure "install from unknown sources" is checked in settings/security or devices.

Using the browser file:///sdcard/fireflash11.apk then go

2: Root tablet (You are probably already rooted?) {Fireflash11 will not run unless rooted}

3: Download Freedom boot 7.4.3 to tablet SD card.

4: Download TWRP recovery 2.6.1 to tablet SD card.

5: Download CM10.1 or cm 10.2 or both to tablet SD card.

6: Download Hashcode Stock 7.4.3) S.zip file to tablet SD card.

7: Download GAPPs.zip for CM 10.1 to tablet SD card.

[[[You are downloading five (5) files to the SD card before you start Fireflash11]]]

8: Run Fireflash11 and select everything (check stack, check bootloader, check freedom boot and select from SD card, check recovery and select from SD card, check prevent automatic script updates.

9: Clear all caches, etc.but, do not clear SD card if this is a choice.

10: Down at the bottom of the Fireflash11 screen, Click install script (This installs Stack, TWRP, Recovery and 2nd bootloader) (this is very quick - just a few seconds).

11: Once done Click "boot to recovery" at the bottom of the Fireflash11 screen.

12: Your tablet will boot up into recovery automatically.

13: Once in recovery, Wipe system, etc but, do not clear SD card (All you files and zips are on the SD card).

14: Once wiped In recovery, go ahead and click on install and choose CM 10.1, and then add zips and choose GAPPS, then swipe to install.

15: The Recovery program will now install CM10.1 to you tablet.

16: You could also choose to install Hashcode Stock 7.4.3 OS.zip instead of CM 10.1 (Your choice)

17: Now you see why you are OK.....You can use Recovery to install any OS you want including 7.4.3OS.zip (Gets rid of 7.4.6 for you)

This is why you are not in trouble........

18: If you do not put all the files on the SD card before you start, you would then be in trouble and would need a fastboot cable or know how to use ADB sideload in Recovery to fix the OS -Freedom boot mismatch but, will all the files you need already on the tablet, it does not matter if you have a boot version mismatch.....

[[Yes, you could also extract the Freedom boot 7.4.6 from Kinology and use it instead of Hashcode's 7.4.3 version but, in your case, you want to immediately install CM10.1 so, it does not matter if you can boot into the Kindle OS or not.....]]

[[I have not tried Cm10.2 yet so, I am not sure how stable it is. Cm10.1 is a sure bet.]]

Regards