[Android Q&A, Help & Troubleshooting] no_cannabis:
OK. I meditated a bit yesterday, and recalled the most of the sequence of what I did. You shouldn't follow these steps, just make your own conclusions about what can help in your particular situation.

Once I got my Matrix(es) I played with the White 16Gb model. Black 4Gb is still intact, and I have made partition images of both so that I could restore to the stock condition any time (this didn't work for system once it got resized by one of IMG flashes). So the rest was only done on white 16Gb model:

1. I installed CWM6 and took a nandroid backup of original ICS. I didn't like the CWM6 format (I like how the old one stored everything in a single zip file), but CWM5 doesn't work with M1 key layout.

2. I flashed CM10, got no touchscreen, but everything else worked just fine. Oh, yes, the camera was upside-down, but this could be fixed by copying camera.cfg into /etc . If you flashed my compatibility pack after CM10, the file should be in place and camera working fine, otherwise you can extract it from zip and copy it manually (use ES File Explorer, it comes with free root filesystem access).

3.Then I got the list of loaded kernel modules from a black M1, to figure out which drivers are required. Goodix_touch_811 was the one responsible for touch screen and eventually I found the right one (compiled for CM10 version of kernel). I tested it with modprobe, everything worked, so I made the first cut of the compatibility pack.

4. Then trouble happened. While flashing CM10 the tablet froze, bringing itself into unusable state, just like yours, guys. I couldn't boot into recovery with h/w keys, I couldn't reboot it via adb because there was no system to boot, etc.

5. Eventually I found the info about LiveSuite and started searching for crane_q7 files. I knew the device name, because I did go through learning of CM10 compilation and started to compile my own builds by that time.

6. I didn't have to wait too long for another trouble to follow. After I found a Gingerbread IMG exactly for our tablet, which would be sun4i_crane_q701_360_HC_keyvol, it reduced the system to mere 275Mb, which made impossible to restore the original system backup I took, or to flash CM10 along with gapps.

7. So I found an IMG file (sun4i_crane_novo7fc-a3-201-10) with bigger system and flashed. No touchscreen, display off-center, all that stuff.

8. Since it was only system (and media) partitions that got resized, I was able to dd boot partition back in place, which fixed the display.

9. I installed CWM, flashed CM10 back, and worked out a compatibility pack to install the rest of the drivers as close to the original set as possible. I tested flashing CM10/compack/gapps several times before publishing here. I also found that CM10 quite often won't boot, and I know that it's related to Dalvik cache a lot of times, so I got used to wiping it as soon as CM boots and I'm able to reboot into recovery. Whoever continues to work on CM10 for M1 should investigate logcat closer, as there may be other problems related to drivers.

10. As of now, I restored the original CWM backup (ICS), as my wife is yelling at me about buying these tablets for kids 4 months ago, and them still not getting a single sight of their to-be-Halloween-then-Xmas-then-NY presents.