[Android General] brainvision:
INCREASE ANDROID INTERNAL STORAGE SPACE

(OR COMPLETELY REMOVE WINDOWS)​

* Your warranty is now void.
*
* We are not responsible for bricked devices, dead SD cards,
* thermonuclear war, or you getting fired because the alarm app failed. Please
* do some research if you have any concerns about features included in this ROM
* before flashing it! YOU are choosing to make these modifications, and if
* you point the finger at us for messing up your device, we will laugh at you.

Hy guys hi girls :D

This guide is for whom who may need more space in Android. Please note that to achieve that you will have to completely erase your tablet, removing both Android both Windows (but without touching the BIOS)! Someone also told me that it could be possible to try with Macrium Reflect, but I have too bad experiences touching and moving partitions from Windows and lost too much personal stuff that I will never do it again! If you feel brave you could give it a try, still..

So, as said, YOU WILL COMPLETELY RESET YOUR TABLET and you will need to reflash it from scratch: we will use latest Android firmware available at today (September 13 2016) and the official Widows 10 firmware for i15-TC (unfortunately those Cube dumb-ass never released the TCL one, I'm writing them every day but never ever replied!!). I can assure you that there is no difference but the i15-TC sign on the Windows Settings, instead of i15-TCL. This guide was tested by me and by other users from russian forum 4pda; I want to also thanks those users because they taught me how to do that!

**** We will need a few images partitions to restore TCL Android OS, the official TC firmware to restore Windows, a modified partition table file, an 8GB or better 16GB USB pen dirve, a USB keyboard

(if you don't have the official Cube keyboard)

, a USB hub, a mouse and the micro USB OTG cable. If you plan to completely remove Windows you will only need the Android images files and the partition gpt one. ***

Before anything else you may want to backup your data and your Windows 10 product key; note that this procedure will indeed preserve your official product key because we will install official Cube version and the key is stored in the BIOS, but we never know! Search Google for Windows programs that can backup and restore it!

----> Now please download latest firmware Android images (i15-TCL September 13 2016): http://xdaforums.com/showpost.php?p=69582100&postcount=19

We need the following partitions:

mmcblk0p2.img
mmcblk0p3.img
mmcblk0p4.img
mmcblk0p5.img
mmcblk0p6.img
mmcblk0p7.img
mmcblk0p8.img
mmcblk0p10.img
mmcblk0p11.img
md5sum.txt

Please check the MD5 checksum before proceed!

---> Then please download the official Dual Boot firmware (and BIOS - that we will not flash) for the i15-TC from here: https://drive.google.com/open?id=0B55gm49vxGYHWWpGaEFOMXB4dFE

---> Last but not least, download one of these file:

- if you want Android internal memory of 20 GB (and Windows of 32 GB total): http://www.mediafire.com/file/opmry63m19smmzl/gpt_20g.bin

- if you prefer to completely remove Windows (you could restore it lately by resizing again partitions): http://www.mediafire.com/file/6sp0b7bevqqdrv1/gpt_53g.bin

---> We will use fastboot commands to repartition and flash Android from scratch, so if you don't know what ti is or you have issue with it, please check the first post for most common issues and solutions.

---> We will also need a USB stick drive of 8 GB (I used a 16 GB one but the size of Windows firmware is 7,xx GB so it should be enough). We will first see how to flash Android and then Windows. Please note that I suggest you to strictly follow this order; you could flash Windows months later if you wish, the important thing is that when you flash Windows you already have Android).

So now we are ready. As we said, first we will flash Android.

FLASH ANDROID

1. Open the folder where you downloaded the img partitions images files (mmcblk0p2.img etc etc) and copy in that folder the gpt file you choose (20 or 53). Do not touch the official i15-TC firmware archive now, we will use it later.

2. Shut down your device and after one minute start it by booting the bootloader; to do that when device is still off press the Power button, choose Android when it asks which OS you want to start and immediately after that press and keep pressed the

Volume Down

button until you are in the bootloader.

If you never unlocked your bootloader we will do it now (unlocking bootloader of course wipe all your Android data, but this is not really important now because we are going to erase all the tablet, so if you did not backup this is your last chance to do it).

3. Open a command prompt in the folder where you downloaded the img files and copied your partition table (gpt file). We assume that all the files are in the folder where the command prompt is, if not please navigate to it using cd command.

4. Check if fastboot is working with

fastboot devices

if the output is

0123456789ABCDEF	device

go on, if not please check the first post for possible solutions!

5. Now execute every command below by pressing ENTER at the end of each line (you could copy them one by one if you prefer, the important is to execute them as I wrote!)

fastboot oem unlock

Now the following command (and the following one only) will change depending if you choose the 20GB data partition gpt table or if you choose to completely remove Windows (until you choose to flash it again, of course); if you want more space for Android but you also want 32,8 GB for Windows, then execute

fastboot flash gpt gpt_20g.bin

If you want to completely remove Windows do:

fastboot flash gpt gpt_53g.bin

The next ones will be the same

fastboot flash bootloader mmcblk0p2.img
fastboot flash recovery mmcblk0p4.img
fastboot flash misc mmcblk0p5.img
fastboot flash metadata mmcblk0p6.img
fastboot flash system mmcblk0p7.img
fastboot flash cache mmcblk0p8.img
fastboot flash persistent mmcblk0p10.img
fastboot flash config mmcblk0p11.img
fastboot format data
fastboot flash boot mmcblk0p3.img

And it's done. :D

Now we have an unrooted stock original firmware (with unlocked bootloader of course, but mine was already unlocked when I received it from AliExpress; if your bootloader was unlocked I suggest you to go on; if it was locked and you don't plan to root the device you can lock it again by using

fastboot oem lock

.

PLEASE NOTE

that if you will need to root the tablet in the future you will have to unlock it again, it means again wiping all your personal data and apps -

not

system partition but only personal data, something like a factory reset; so here it's up to you, if unsure leave it unlocked).

Now we could reboot Android. First thing you want do is to check your internal storage space. So execute

fastboot reboot

The first reboot is always long, you could wait up to 5 minutes, but it will boot, don't worry!

INSTALL WINDOWS

If you chose the 20GB gpt partition tablet we still have to flash Windows, while if you flashed the 53 one, you are done. Naturally you could execute this procedure again if you changed your mind.

When and if you decided to flash Windows:

1. Take a 8 or better 16 GB USB pen drive and format it as NTFS file system from a Windows PC, using as label "WINPE" without quotes

2. Go to the folder where you downloaded the

Cube iWork10 (i15-TC) 26052016.rar

and unpack it. Navigate to the WIN10 folder and copy ALL its content to the root of the USB stick; the result will be something like that

3. Now shut down your tablet and attach the USB hub to the OTG cable and this one to the tablet; attach the keyboard, the mouse and the USB pen drive to the hub (if you have the stock keyboard I think you could directly attach the USB pen to the provided USB on the keyboard itself, but cannot be sure 'cause I never had it).

You should now be in the BIOS. Go to the very last tab, named SAVE & EXIT and reset the BIOS (if I did not reset the boot run into a ACPI error). Save and exit to restart the tablet and go again into the BIOS; go to the last tab again, and pick your USB Drive here from the

Boot Override

menu, so we don't need to change the bios settings related to he boot, we will just override for one time the boot sequence. Please look at the following pictures

View attachment 3949453

View attachment 3949454

The line in white is the one you need to pick; of course your USB drive will have a different manufacturer, mine is KingstoneDataTraveler but I don't know yours; also note that the first time I restored Windows I had two partitions there: KingstoneDataTraveler etc, partition 1 and KingstoneDataTraveler etc, Partition 2. In my case with two partitions visible I got to pick the second to boot it. Remember that if you have the same issue.

4. Once you pick up the correct choice there you are basically done; now let Windows do his stuff and install the system files; once finished it will shut down automatically; at the next boot you will be able to configure Windows 10 as usual; unfortunately Cube added only few languages into the official firmware, as I remember only English, Chinese, Polish, Russian, French (for sure, no Italian :D) so you will need to download it later once in Windows (as you did the first time you boot Windows 10 in this tablet, anyway, exactly the same).

The official (and hopefully) legal Windows 10 Activation key should be fully preserved because it is stored in the BIOS, but if for some reason you lost yours you can now restore the backup you did.

Well, that's all. :good:

As always it seems a lot of stuff and a very long procedure but I tried to go deep into the process because I know that you could feel like lost when it comes to important stuff like this is!