I have a tablet I am trying to get info on. The only thing I have to go on is a usb id of 2207:0000, and a brand/manufacturer name of "MID".
2207 is not in usb.ids (or pci.ids) as a Manufacturer, and the one mention of rockchip is a red herring. The outfit Iḿ talking about is
http://www.rock-chips.com

It is without any manufacturer data. From the kernel modules and specs, I have decided it is a Rockchip rk30board with an RK3188 SoC. Nice tablet, but no security updates! It needs some of those.

For the record only, I got to the bottom of this. 2207 is Rockchip.

Rockchip are a chinese manufacturer of Arm SoC boards that have found their way into many, many TV Sticks, Tablets and other devices. The heart is a rockchip rk29xx - 32xx (their latest). There is a plethora of screens(mainly hdmi quality), bluetooth/wifi, and you can be sure they are under pressure for mobile (radio & sim) facilities also.

So there is an endless supply of these tablets, all sporting 2207:0000 as the usb id. Mine has a retina 2048x1536 screen, a hdmi port, sdcard slot, a RTL8188 wifi chip, no bluetooth, no name, and a build number not seen on the internet. I have not been able to link that to any other known or half known brand. The packaged GPU is wanting on <= rk3188, but the rk3288 claims a large improvement there.

A few of their own proprietary modules are supplied as binaries. People like CM wisely avoid supporting any Rockchip board. The story seems to be - flash them and you are likely to cut off wifi, bluetooth, or something of that nature. Low wifi sensitivity is also a common issue once you wander from original software.

Someone reported success, but he had to cp the proprietary modules into his new kernel, and hexedit the version magic - not for the faint hearted.

Not that anyone is interested in this, but via alibaba, I ran my tablet down as very probably a Model BW-MC1027 from Broadwell Technology Co in China. Even the box it was supplied in matches what I got. They have the somewhat doubtful url of http://www.broadwell.cc. Google can resolve it.

It still has the RK3188 based rk30 board from Fuzhou Rockchip Electronics Co., Ltdhttp://www.rock-chips.com. None of it means anything, because there is no support. period.

I have one of the original TF-101 ASUS Transformers I recently decided to root and mod for the experience. Whilst investigating I noted several comments re generic Chinese tablets that basically were untouchable. Sorry you ran into this.
I eventually got mine modded, but it influenced me on my phone upgrade to go for a supported model.

Don't be sorry for me. I'm using it as a book reader. It works.

There's a lovely screen, and fine specs for cheap money. Not being able to stick a mod on that is no big deal. Android is basically all free or nearly free apps anyhow. When something dies, it was cheap enough that I can sling it without much in the way of regrets.

The tablets out next year might be able to drive this setup a bit better. All these tablet makers have severe pressure on Arm and Mali to up their game. Arm has the A12 coming online, and Mali has the Mali-750 gpu, which together should make a much better experience.