I found this ZTW A-Series 12A Brushless ESC w/1A BEC MultiRotor Version w/SimonK at Quantum Hobby. This would suggest that they are programmable like the Plush series ESCs. [link=http://www.quantumhobby.com/product-p/a-ztw12abec-mr.htm]A-ZTW12ABEC-MR[/link]

Further investigation revealed that this ESC is Also-Known-As (aka) the Mystery 12A or MY12A as shown [link=http://www.rcuniverse.com/forum/edit.asp?messageID=11344725&toStyle=tm]here[/link]. The MY12A can be found in [link=https://docs.google.com/spreadsheet/ccc?key=0AhR02IDNb7_MdEhfVjk3MkRHVzhKdjU1YzdBQkZZR lE#gid=0]Tom Snow's Compatibility List[/link] for SimonK firmware.

Here is the big RCG thread on [link=http://www.rcgroups.com/forums/showthread.php?t=1513678]ESC Firmware Flashing[/link]. Unfortunately, there aren't any pads to attach a programming connector which elevates the difficulty of re-flashing the ESC.