[Upgrading, Modifying and Unlocking] Death_Comes_Slow:
DO THIS AT YOUR OWN RISK. YOU COULD PERMANENTLY DAMAGE YOUR DEVICE. READ ALL DIRECTIONS BEFORE ATTEMPTING.

These tablets are an LY-F1 clone. So most of the stuff that is compatible with an ly-f1 will work for you.

The model I am referring to and have personal experience with is the following: Trio Stealth Pro 7c

The Trio already comes rooted. I accidentally un-rooted mine AND I ended up with the 0.00 internal storage error. It would not let me download or install apps already on my SD card. To install a new (custom) ROM you can follow this quick guide I will put together for you.

First...

Things you will need to Download;

CWM Recovery for the Trio Stealth Pro 7c : CWM Recovery 6.0.1.2 for Allwinner A10 LY-F1/TREQ Tablets

Custom ROM for the Trio Stealth Pro 7c : Choco Ice Cream 4.0 BETA1 for Allwinner A10 LY-F1/TREQ

32 or 64 Windows ADB Drivers : Windows ADB Drivers for Trio Stealth Pro 7c

ADB needs to be downloaded and installed/setup via the Android SDK found here : Android SDK Download

1.) Download CWM Recovery

2.) After your download is finished go ahead and extract the contents to the SD card. I connected to my PC and put the extracted files (there are 3 files) on both the internal storage as well as the removable micro-SD just to be safe.

3.) Download Choco Ice Cream 4.0 BETA1

4.) After the ROM finishes downloading DO NOT extract; just copy the whole .zip file directly to the Micro-SD Card as-is.

5.) Connect your Trio to your Windows PC with a USB cable. Make sure you go to settings/Developer Options/and turn on USB Debugging. I had to open device manager and manually install the ADB Drivers. You can check to see if the drivers are installed by opening a command prompt on your computer. You would do this by going to start and typing CMD into the search bar. Or you can click on Run and type CMD into the box. This should open your command prompt. Enter each line one at a time, pressing enter after each line:

cd/

cd androidsdk/platform-tools (some of you may have to type just "tools' depending on which version you have)

adb devices

After hitting enter you should see your device's serial number. This shows that your device is connected and was found. If you do not see your device serial number either you don't have the correct drivers for your device or you did not enable usb debugging mode.

6.) Now we're going to start the adb shell by typing the following, again, pressing ENTER after each line of text.

cd\

cd androidsdk\platform-tools

adb shell

You should now see one of the following symbols:

# or $

Now type the following, again, pressing ENTER after each line of text

cd /mnt/sdcard

sh install-recovery.sh

sh reboot-recovery.sh

After pressing enter, you will see your tablet reboot into recovery mode. You can use the volume buttons to move up and down and use the power button to select. To get back into Recovery Mode if you reboot out of it or your tablet turns off; go ahead and turn your Trio completely off. Once it is shut down press the center of the volume button until the WHOLE thing is pushed in. Do this WHILE holding down the power button. Keep it held for a few seconds until you see the the screen come back on. Once you see it, you can let go and it will reboot into recovery mode.

7.) From Recovery mode:

MAKE A FULL BACK-UP FIRST. DON'T IGNORE THIS STEP!!! IT MIGHT JUST SAVE YOUR DEVICE ONE DAY!!! When the backup gets finished go back and then:

SELECT: INSTALL ZIP FROM SD CARD. (press the power button once to select it).

If you placed the ROM on the micro SD-card then you should select 'Choose zip from sd card' if you placed the ROM on your internal SD-card you should select: 'Choose zip from internal sd card'. Now find where you placed the ROM/download. Use the volume buttons to scroll up and down. Once you find it, select it with the power button. Scroll down until you see 'Install choco ice cream 4.0beta1_LYF1.zip'. Select this with the power button.

8.) It should now start to install. This will take maybe 3 minutes tops. Just be patient. When it's done, wipe the data and the cache. (it was one of the options listed when you first start recovery mode)

9.) SELECT: GO BACK; then choose REBOOT or REBOOT YOUR DEVICE or whatever and wait for the device to finish restarting. It takes several minutes to finish booting up; be patient; it will get done sooner or later.

10.) Your Finished :)

Here are some useful links for more Custom ROM's and other stuff you might need or find helpful:

XDA Thread for [ROM][Allwinner A10] Choco Ice Cream 4.0 BETA1 for LY-F1/TREQ

XDA Thread for CWM Recovery 6.0.1.2 for Allwinner A10 LY-F1/TREQ Tablets

XDA Thread for [rom] Unofficial CyanogenMod 9 for many AllWinner A10 tablets

XDA Thread for [rom] Unofficial AOKP for many AllWinner A10 tablets

XDA Thread for [ROM][PORT]CM9/CM10 for LY-F1/AlldroSpeed-UPDATED 13.09.2012

Good Luck...