[Kindle Fire HDX 7" & 8.9" Q&A, Help & Troubleshoot] Ivone:
Davey, I have not abandon the OS changing process, I am just VERY scared. Since my post, I have been reading and reading like crazy hundreds pages trying to understand between all the info what exactly is related to only my FireHDX, but did NOT found exact instruction. A lot for HD, HDX 7 etc. It looks like that my Fire is not very popular :(

I will write again my setup.

Fire HDX 8,9, 4.5.5.1, (3rd generation), 16GB, 4G/LTE, free space left 6.86GB, all stock. Only extra apps I installed are: Opera, GPS Test, KingRoot that I used to Root (working), ES File Explorer that I used to change the permissions like this > Root Explorer>Mount R/W>changed permission to RW in: /system and /mnt/sqfs

I have Windows 7, 32

I am a complete chicken to proceed further.

I imagine next step is to install Safestrap but I am not sure what is the latest version for my Fire HDX 8,9, 4.5.5.1, 16GB, 4G/LTE

(it looks like Safestrap 4.0.1 is the one I should use - correct?) If yes should I follow your instruction BELLOW from other thread?

Next step is to install Safestrap 4.0.1 which provides a pseudo recovery environment that supports the installation of custom roms. You can snag the app from here (got the URL - np), be sure to select the appropriate format (APOLLO). Once installed launch the app and install Safestrap recovery which is the component that does the heavy lifting.

Now reboot. You'll notice a new screen that has a couple options at the bottom. Select the option that launches Safestrap recovery. From home screen go into the backup section. Take a backup of your current FireOS installation (selection all partitions). You will want this should you every want to restore you device to it's current configuration. The resulting files will be quite large and should be copied to another device for safe keeping (will transfer to my PC.). Exit Safestrap and reboot into FireOS. Tether your device and copy the files to a suitable host. You seem to be familiar with ES File Explorer so should have no problem finding them. Should be in the TWRP directory located within sdcard (or just browse internal storage from the host machine).

What is the correct slot that I should use? I just found the answer = Stock slot!

Do I have to download some drivers to my PC for my Fire HDX 8,9, 4.5.5.1, 16GB, 4G/LTE and transfer them to Fire directory? If yes, what drivers and where should I place them. (found the answer - installation zip from here. GAaps and SuperSU are built in so it's the only file you will need. Transfer that to a safe location on your device, preferably in a folder you create directly under sdcard)

Apollo Nexus ROM will be my prefer choice, but wonder if everything will work.

I know that you answer that, but then you mention 4G/LTE, is that mean it will work as well or my SIM/phone/data will not work.

Is there any known issue (what will NOT work) on my Fire HDX 8,9, 4.5.5.1, 16GB, 4G/LTE once I change to Apollo Nexus ROM?

Also I like to ask you if CM11 will have any advantage over Nexus on MY Fire HDX. Just wonder (as you said it has nice GUI etc.)

I red tons and tons of yours and other people posts and I am VERY great full for all your time and help you offer to newbie like me. Your dedication is awesome.

UPDATE

I took the plunge and installed Safestrap and all is fine (checked few times)

I downloaded Nexus Apollo and placed it into folder that I created in the FireHDX Internal Storage. I don't see or know how I can create folder in the root directory in

my Fire sdcard.

I am trying to follow your instructions from your other post:

Nexus Apollo installation zip. GAaps and SuperSU are built in so it's the only file you will need. Transfer that to a safe location on your device, preferably in a folder you create directly under sdcard. (HOW) It is important this file (or it's successors) remain on your device at all times for emergency recovery. Putting it in the suggested location reduces the chance of accidental removal when wiping the (user) data partition. You can also place the folder directly under root (/) but be aware some file managers and tethers restrict access to high level directories.

Important: Unlike TWRP Safestrap v4.0.1 recovery has no ability to communicate with the outside world. Not by tether, wifi, bluetooth, adb, etc. It is fully isolated environment. If your rom becomes unstable (rare...but it does happen) your only recovery is using a previously created backup or a flashable rom image (as discussed above) resident on the device.

That's exactly my concern - will my Apollo Nexus folder get deleted when I install it Nexus on the Stock Slot. Does it wipe ALL the folders in the Internal Storage?

Can I/ should I move the ApolloNexus folder using ES File Explorer 3.0.5 in to Fire Device directory or Root and will I be able to access it after the wipe.?

I am stuck..................!

TIA

Attaching image where is the folder now - is it safe there?