[Huawei MediaPad, T-Mobile SpringBoard] Djiban:
I)LET'S TRY TO GET YOUR DATA BACK BY USING "UNLOCK BOOTLOADER" SOFTWARE:

it saved some damaged bootloader before

Huawei MediaPad X1 - Официальная прошивка (OS 4.x.x) - 4PDA

Huawei MediaPad X1 - Официальная прошивка (OS 4.x.x)

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(google translate it!)

II) LET'S TRY TO GET YOUR DATA BACK BY USING A NON-WIPE HUAWEI ROM UPDATE:

official dload flash sometimes work even if you are in bootloop:

or

Huawei MediaPad X1 - Official Thread V2

Huawei Mediapad X1 - V2Main Huawei Device Product Link : minisite hereThe Official Launch Video - MWC 2014, 14 March» Click to show Spoiler - click again to hide... « JoXQXZKleQc Official SpecificationsNOTE: There are 2 brand names for this product. The "Honor X1" branding is for the China...

forum.lowyat.net

(end of post)

or

http://xdaforums.com/huawei-mediapa...-3-320-dpi-t2923860/post57253214#post57253214

If you use a simple update that lead to your last ROM (and not a complete ROM install, like http://xdaforums.com/huawei-mediapad/general/rom-t3275540 to update from lollipop B110 to Lollipop B113, you might get your device as it was before trouble.

But you'll have to fond the small update file (OTA file saved by a user)corresponding to your last installed ROM :(

III) REINSTALL A ROM OFFICIAL WAY:

official dload flash sometimes work even if you are in bootloop:

or

Huawei MediaPad X1 - Official Thread V2

Huawei Mediapad X1 - V2Main Huawei Device Product Link : minisite hereThe Official Launch Video - MWC 2014, 14 March» Click to show Spoiler - click again to hide... « JoXQXZKleQc Official SpecificationsNOTE: There are 2 brand names for this product. The "Honor X1" branding is for the China...

forum.lowyat.net

(end of post)

or

http://xdaforums.com/huawei-mediapa...-3-320-dpi-t2923860/post57253214#post57253214

(I advice:

for 501L : http://consumer.huawei.com/tw/tablets/support/downloads/detail/mediapad-x1-tw.htm?id=60006 (limited languages, but only official EMUI 3 for 501L)

for 503L : http://emui.huawei.com/cn/plugin.php?id=hwdownload&mod=detail&mid=64

for 501u : http://emui.huawei.com/cn/plugin.php?id=hwdownload&mod=detail&mid=48

)

You'll loose unsaved data :(

If rebooting the device does not start the update, try out to force it:

1) Turn off the unit

2) press volume up, volume down, & the power button (do not release)

3) keep pressing until the rom update screen appears

IV) VERIFY YOU'RE HARD BRICKED OR SOFT:

if official dload flash does not work:

1) try accessing fastboot mode by powerinf on the devic with power+ Vol down buttons keep pressed, or by pressing the vol down button while pluggin the device to a PC.

2)try to access other boot modes:

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- "Safe Mode" disables your add-ons and other apps, boots to stock launcher.

Saves you (somewhat) after installing something bad

- "force update" make the device look into the dload folder, and turn into update process

- "acessing recovery" boot in recovery

If the fastboot mode doesn't appear,you can try safe mode first, see if it boots. Then force update, with having put a update or a complete ROM int a dload folder of your SD card (but I guess you try it already). Then after recovery mode.

V) USE ADB IF FASTBOOT MODE IS REACHED

1) download huawei update extractor and install it on Windows: http://xdaforums.com/showthread.php?t=2433454

2) extract with it, the .img files from your desired rom .zip huawei package

(I advice:

for 501L : http://consumer.huawei.com/tw/tablets/support/downloads/detail/mediapad-x1-tw.htm?id=60006 (limited languages, but only official EMUI 3 sor 501L)

for 503L : http://emui.huawei.com/cn/plugin.php?id=hwdownload&mod=detail&mid=64

for 501u : http://emui.huawei.com/cn/plugin.php?id=hwdownload&mod=detail&mid=48

)

3) install ADB on Windows

4) Fastboot flash boot boot.img

Fastboot flash cust CUST.IMG

Fastboot flash cache cache.img

Fastboot flash system system.img

Fastboot flash recovery recovery.img

Fastboot flash user user.img

Reboot, do initial setup and settings --> reset

5) if still stuck at boot logo, retry now a official ROM install (see II above)

Sources to download ADB/fastboot:

Download Minimal ADB and Fastboot Tool (all versions)

Download the latest version of Minimal ADB and Fastboot Tool which allow you to install and setup the ADB and Fastboot files on the computer.

androidmtk.com

The Easiest Way to Install Android's ADB and Fastboot Tools on Any OS

If you’ve ever tried to root your Android phone or flash a ROM , you may have heard about ADB and/or fastboot. These two tools are surprisingly pow

lifehacker.com

Details about ADB and fastboot flashes:

http://xdaforums.com/showpost.php?p=56447461&postcount=17

http://xdaforums.com/showpost.php?p=55657932&postcount=18

http://xdaforums.com/showpost.php?p=55640429&postcount=15

VI) IF NO SUCCESS, DO READ THOSE BRICK THREADS:

http://xdaforums.com/huawei-mediapad/general/bricked-huawei-mediapad-7-x1-t2884279

New community features for Google Chat and an update on Currents

Note: This blog post outlines upcoming changes to Google Currents for Workspace users. For information on the previous deprecation of Googl...

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New community features for Google Chat and an update on Currents

Note: This blog post outlines upcoming changes to Google Currents for Workspace users. For information on the previous deprecation of Googl...

plus.google.com

New community features for Google Chat and an update on Currents

Note: This blog post outlines upcoming changes to Google Currents for Workspace users. For information on the previous deprecation of Googl...

plus.google.com

http://xdaforums.com/huawei-mediapad/general/hard-bricked-mediapad-x1-t3078817