For the quick answers thank you very much, they are very helpful for me !!!

Re: How to install Ubuntu touch on unsupported device
As a newbie, I am desperately looking for where to position my request.
To me this forum seems quite daunting.

Is it possible to install Ubuntu Touch on the following device ?
If so: does it make sense ? And are there any instructions for this ?

Tablet from the year 2012 from the company ODYS:

XELIO
CPU: 1,2 GHz Processor (Cortex A8 with ARMv7)
Chipset: SoC Allwinner A10
GPU: Mali-400MP with OpenGL ES 2.0
RAM: 512 MB DDRIII RAM
Display: High Resolution Colour TFT Display with LED Backlight
(Capacitive)
Screen Size: (Diagonal) 17,8 cm (7")
Resolution: 800 x 480 | 16:9
Internal Memory: 4GB
Network Connection WLAN (802.11 b/g/n), 3G Dongle Ready

Mini-USB port (also with host function)
Mini HDMI output
Battery: 4000 mAh Lithium Polymer

Android version: 4.04 - Baseband version 1.4rc3 -
Kernel version: 3.0.8+ paco@inet #26
Build number:
A10_ANDROID4.0.3_ODYS_V1.02_20121123

Thanks in advance for any further help !