[Xoom Q&A, Help & Troubleshooting] webeougher:
For my fellow Stingray users (and possibly Everest users as well, if they're having similar issues), I was one of the group of people who couldn't get data on any 4.4 roms after going through the BigPart process. After a bunch of trial and error (and some excellent suggestions from fellow community members, I was able to get data working again and I'm happily enjoying KitKat on my three-year-old Xoom. If you've got a bit of patience and an hour or so, I believe I've got the solution to help you restore your data as well.

IMPORTANT: This entire process should be completely harmless to your Xoom, and the goal here is to help the group of Stingray users who lost all data functionality to repair that issue so that they can enjoy the full benefits of Android 4.4 (and potential future updates). That said, you do this at your own risk, and in doing so, you agree not to hold me accountable if you brick your Xoom, or if it dies, loses data (you’re going to lose everything but what’s on your SD Card, so think about that before you start the process), or any other unforeseen circumstances.

STAGE 1: Reverting to Stock Partitions

1.) DISCLAIMER: Any and all data on anything but your external SD Card will be completely wiped. If there are any back-ups you value, move them to your SD Card, your computer, or a cloud storage account. There’s no getting them back once you start this process.

2.) First off, you need to make sure you have everything you need downloaded and ready. You will need the following on your SD Card:

-TWRP 2.6.3.0 touch recovery from [MENTION=3900214]runandhide05[/MENTION]

-TWRP 2.6.3.0 BigPart touch recovery from [MENTION=3900214]runandhide05[/MENTION]

-a standard partition Stingray rom (I used CM 10.1 from [MENTION=3863530]Steady Hawkin[/MENTION], 10/28 build, which you can find here)

-(optional) GApps package for standard partition rom (I used the 02.20.2013 Unified GApps found here, but you seriously don’t need them for anything.

-your BigPart rom of choice (I went with CM 11, which you can find in this thread, but there’s also OmniRom, which you can find in this thread, both of which were kindly ported by [MENTION=2371134]Schischu[/MENTION]. If you opt for Omni, you’ll also need a flashable zip file of the Superuser app of your choice.)

-your 4.4 GApps of choice (I use the PA Modular Full GApps, but any 4.4 GApps will be fine once you’ve repartitioned)

-Universal Xoom root .zip file, created by [MENTION=2598014]solarnz[/MENTION] (which you can find here)

As well as the following on your computer:

-The Android SDK, specifically ADB and Fastboot (if you don’t have this set up yet, start at the very beginning: http://developer.android.com/sdk/index.html)

-a stock android rom for the Stingray (I used HRI66, which you can find here)

-TWRP 2.6.3.0 touch recovery from [MENTION=3900214]runandhide05[/MENTION]

And one last thing:

-A good wifi connection (either through a wireless router or using your phone or other device with a data plan)

3.) Reboot your tablet into recovery and flash the non-BigPart TWRP 2.6.3.0 touch recovery. DO NOT REBOOT YET!

4.) Tap the Home icon, tap the Wipe tab, tap the Advanced Wipe tab, and wipe everything but sdcard (that means Dalvik Cache, System, Cache, Data, and Internal Storage)

5.) Tap the Home icon, tap the Reboot tab, tap the Recovery tab. You will get a “No OS” warning, tap “Reboot Anyway”. You will be prompted to install SuperSU – ignore this and reboot into recovery.

6.) Once you’re back into recovery (CAUTION: THIS MAY TAKE SOME TIME. BE PATIENT AND LET YOUR TABLET DO ITS THING!) You may get a warning about data being encrypted, but just tap the Home icon, then tap the Wipe tab. Tap the Format Data tab, type “yes” when prompted, and wait for your data to format. Go back to the main wipe menu, tap the Advanced Wipe tab, and select System and Cache and proceed to wipe them.

7.) Tap the Home icon, tap the Reboot tab, tap the Recovery tab. Again, you will get the “No OS” warning and the prompt to install SuperSU – ignore both of them and allow your tablet to reboot into recovery, which, again, may take some time. (I’ve done this process multiple times and each time, the amount of time that it needed on various reboots was different, so be patient if you don’t want to brick your Xoom.)

8.) Tap the Mount tab. Sdcard, Cache, and Data should be checked; System should be unchecked. Tap the box next to System, make sure that it mounts without any errors, and then uncheck it again. If you’ve made it this far, you’re back to the standard partitions.

9.) Tap the Install tab. Your external sdcard should be showing by default. Flash your standard partition rom (in my case, CM 10.1) and your GApps, if you so choose (though again, they serve no purpose).

10.) Tap the Home icon, tap the Reboot tab, and tap the System tab to reboot into your chosen standard partition rom. Ensure that everything loads (again: this may take some time) and go through the setup process.

11.) Go into Settings and enable developer options (Settings --->About Tablet--->tap Build Number several times until Developer options are enabled.

12.) Go into Developer options and make sure that Android debugging is checked. Now you’re ready for Stage 2.

STAGE 2: Returning to stock Honeycomb

1.) Find your stock Honeycomb rom (as mentioned earlier, I used HRI66) and unzip it into a folder of its own.

2.) Inside the folder you unzipped, you may find another folder designated MZ600_HRI66. Inside that folder, there will be four files, boot.img, recovery.img, system.img, and userdata.img

3.) Copy those files into the folder that has adb.exe and fastboot.exe (if you simply installed the Android SDK as instructed, it’ll be inside the platform-tools folder, which is itself inside the sdk folder).

4.) Connect your Xoom to your computer using a USB data cable (preferably a Motorola one if you have one available) and ensure that there is a notification that says “Android debugging enabled” (if you don’t see this notification, go back into Settings --> Developer options, and make sure that “USB debugging notify” has a check in the box next to it).

5.) Open a command prompt in the directory that contains adb.exe and fastboot.exe (Windows 7 and up, click the File tab and choose “Open Command Prompt”; if you’re on Vista or older, I can’t help you, but I’m sure Google can).

6.) Enter the following command:

adb reboot bootloader

7.) Your tablet will reboot to the red “M” logo and it should say “Fastboot protocol initiated” at the top in white letters. If so, proceed to step 8; if not, and assuming your tablet has rebooted normally, try step 6 again.

8.) Enter the following commands into your command prompt, one at a time, and let each one compete. You’ll get a series of status updates in both your command window and on your tablet as each process completes. Wait for it to say “Done!” before entering the next command.

fastboot flash boot boot.img

fastboot flash system system.img

fastboot flash recovery recovery.img

fastboot flash userdata userdata.img

fastboot erase cache

9.) Once all those steps have completed, enter one last Fastboot command:

fastboot reboot

10.) Your tablet should now reboot into factory Honeycomb and you can disconnect from the USB cable. As mentioned before, this is one of those reboots that could take a few seconds up to several minutes, so just be patient!

NOTE: These next several steps are much easier to complete if you have a high-speed wifi connection. At this point, if you don’t have a data connection, don’t panic, at least not yet. I tried multiple times to activate my device on the Verizon network, and while it said it was successful each time, I never managed to get a 3G connection back. Your best bet is to connect to Wifi and continue the process.

11.) On your tablet, go to Settings --> About tablet --> System Updates. More than likely, your tablet has already started downloading the next update, so you can just sit back and wait for it to download. You’ll get a notification when the download is complete. While you’re waiting, on your computer, move boot.img, system.img, recovery.img, and userdata.img from your ADB folder back into a folder where you’ll have them on-hand if you need them again.

12.) Once you get the notification that the update is downloaded, you’ll have the option to reboot and install or install later. Choose to reboot and install. Your tablet will reboot into the stock Android recovery and install the update, then go to the “M” logo screen and more white text will appear. Wait for this to complete and your tablet to reboot again.

13.) Repeats steps 11 and 12 until you receive and install the IMM76L build (I believe that’s the one) – it’ll be Ice Cream Sandwich and your data should be working. If it’s not, then I’m not sure what to suggest. Your tablet will attempt to download the stock 4.1.2 build (JZO45M) and if it completes, it’s not a big deal, but MAKE SURE YOU DON’T INSTALL IT!

14.) Go to Settings --> Developer options and turn on USB debugging again. (If everything is grayed out, tap the On/Off slider in the upper righthand corner to make the checkbox clickable). At this point, you’re ready for Stage 3.

STAGE 3: Re-rooting

1.) On your computer, find the copy of TWRP 2.6.3.0 touch recovery from [MENTION=3900214]runandhide05[/MENTION] (the standard one, not the BigPart one, yet), and unzip it into its own folder. Copy the recovery.img file from the unzipped folder into the same directory that contains adb.exe and fastboot.exe. IT IS CRUCIAL THAT YOU REMOVED THE RECOVERY.IMG FILE THAT YOU USED TO GET BACK TO STOCK EARLIER!

2.) Connect your Xoom to your computer via USB data cable and ensure that the USB debugging notification appears and that your computer recognizes your Xoom.

3.) Open a command prompt in the directory with adb.exe and fastboot.exe and enter the following command:

adb reboot bootloader

4.) Your tablet will reboot to the “M” logo screen and it will again say “Fastboot protocol initiated”. When it’s ready, enter the following command into your command prompt:

fastboot flash recovery recovery.img

5.) Once you get the “Done” notification in the command prompt and on your tablet, enter the following command:

fastboot reboot

6.) Your tablet will reboot, and when you see the “M” logo screen, wait three seconds and press the Volume Down key. “Android recovery” will appear, press the Volume Up key.

7.) Your tablet will now boot into TWRP 2.6.3.0 and it may “hang” at the TWRP splash screen for some time – that’s normal, wait it out, and when TWRP loads, tap the Install tab. Navigate to the root of your external sdcard (if it’s not showing by default), choose the Xoom Universal root.zip file, and install it.

8.) Tap the Home icon, tap the Reboot tab, and tap System from the reboot menu. Your tablet should boot back into ICS, but you should now have a superuser app installed (ChainsDD’s, I believe). If that’s the case, and you’ve still got data functionality, then it’s time to move to Stage 4.

STAGE 4: BigPart and KitKat

1.) Reboot your tablet into recovery (you have two options – either shut down your tablet, power it back on, wait three seconds at the “M” logo screen and then press Volume Down, followed by Volume Up when it says “Android Recovery”, or reconnect your tablet to your computer with a USB data cable, open a command prompt in your adb directory, and enter the following command: adb reboot bootloader)

2.) Reboot your tablet into recovery and flash the TWRP 2.6.3.0 BigPart touch recovery. DO NOT REBOOT YET!

3.) Tap the Home icon, tap the Wipe tab, tap the Advanced Wipe tab, and wipe everything but sdcard (that means Dalvik Cache, System, Cache, Data, and Internal Storage)

4.) Tap the Home icon, tap the Reboot tab, tap the Recovery tab. You will get a “No OS” warning, tap “Reboot Anyway”. You will be prompted to install SuperSU – ignore this and reboot into recovery.

5.) Once you’re back into recovery (CAUTION: THIS MAY TAKE SOME TIME. BE PATIENT AND LET YOUR TABLET DO ITS THING!) You may get a warning about data being encrypted, but just tap the Home icon, then tap the Wipe tab. Tap the Format Data tab, type “yes” when prompted, and wait for your data to format. Go back to the main wipe menu, tap the Advanced Wipe tab, and select System and Cache and proceed to wipe them.

6.) Tap the Home icon, tap the Reboot tab, tap the Recovery tab. Again, you will get the “No OS” warning and the prompt to install SuperSU – ignore both of them and allow your tablet to reboot into recovery, which, again, may take some time.

7.) Tap the Mount tab. Sdcard, Cache, and Data should be checked; System should be unchecked. Tap the box next to System, make sure that it mounts without any errors, and then uncheck it again. If you’ve made it this far, you’ve successfully repartitioned your tablet back to BigPart.

8.) Tap the Install tab. Your external sdcard should be showing by default. Flash your BigPart rom (and, if you’re installing Omni, your superuser zip file, or, if you’re not flashing one of Schischu’s KitKat roms, the corresponding BigPart boot img or the ElementalX kernel). NOTE: BECAUSE THIS WASN'T SUCCESSFUL FOR EVERYONE, FOR THIS STEP, PLEASE FLASH SCHISCHU'S JANUARY 4TH VERSION OF CM 11 FOR THE STINGRAY, WHICH YOU CAN FIND HERE.

NOTE: You probably can flash your GApps at this point as well; however, I’m detailing the process as I had success with it.

9.) Tap the Home icon, tap the Reboot tab, and tap the System tab to reboot into your chosen BigPart rom. Go through the setup process, ensure you have data, and if you do (and you didn’t do so already), reboot and install your GApps.

NOTE: You may get com.android.phone force close errors when going through setup – if this happens, it’s a good thing – pull your SIM card and reboot, complete setup, re-insert SIM card and reboot again.

If this post helped you, then give thanks to the following people (because they did all the hard work):

[MENTION=470268]bigrushdog[/MENTION] (for the hard work on BigPart) [MENTION=697814]realjumy[/MENTION] (for the hard work on BigPart)

[MENTION=2371134]Schischu[/MENTION] (for the excellent KitKat roms)

[MENTION=1537845]xyrcncp[/MENTION] (for clarifications that led to a minor breakthrough) [MENTION=5624887]rapson2000[/MENTION] (for thinking outside the box and leading to my breakthrough)

There are probably a bunch of other people who contributed that I missed, but I wanted to get this up there in case other people were still having issues.