New Hack Toy - Zenithink ZT-180

Recently I got new hack toy: cheap (well, depends) Chinese Zenithink ZT-180 tablet. This one seem to be (have been) pretty popular and hacker-friendly. Here's data about it:

• Vendor: http://zenithink.com/
• Product home page, ZT180-102 (it's the oldest in the product list, so soon will go to "Retired products" (== /dev/null))
• CPU: IMAPx200 (or IMAPx210, IMAPx220), ~1GHz
• GPU (SoC-builtin): GC600 (tentative)
• RAM: 512MB (Android boots with mem=384M)
• Bootloader: u-boot
• Kernel source from the vendor (github)
• Slatedroid forum announcement and discussion about the kernel release above
• Vendor toolchain
• Post saying that user yuray started upgrading kernel to 3.0.4. Following posts add more details, no source link provided.
• yuray also appears to be the author of ZT-180-Linux-Flash-Tool.
• Slatedroid ZT-180 Wiki
• More detailed hacking information 

It seems that I've got vendor model ZT180_G2 (maybe, ZT180_G0).

Button combinations to hold during power on:

• Home+Power - Upgrade firmware from /sdcard/zt-update/
• Left arrow (of swing double-button)+Power - Boot with debug kernel from /sdcard/zt-debug/ . Debug kernel is booted and continues with the normal boot process.
• Right arrow (of swing double-button)+Power - Multiboot support, select one of 3 modes:
• Android adb - kernel with ADB over USB support
• Android mass storage - kernel with mass storage USB gadget support (tablet is presented as a mass storage when connected to host)
• Other OS - WinCE

Random links:

• http://www.slatedroid.com/topic/10233-zenithink-zt-180-cpu-actually-infotmic-imap210-cpu/
• http://www.androidtablets.net/forum/infotmic-based/2354-infotmic-chips.html