Originally Posted by tmcdonal
Could you elaborate on that? Do you mean based on the way it blocks updates after post-root modifications?
The commando is targeting a niche audience, not very many people cross-specialize in outdoors-man-ship/jobs where a rugged smartphone is a plus/necessary and computer technology. As such, Casio (Nec) made the device to be as rugged as possible, while sacrificing the option of customizability (as opposed to either the Google Nexus Line or the GeeksPhone Line) as a way to entice users who just want the smartphone experience without the ability to royally screw up your phone (yes, root with doing different things can screw up your phone, where as a partially unlocked bootloader + screwing up is a guaranteed brick.)
All providers want to block root, because there is the possibility that someone will root their phone, and screw it up, and ask for a warranty replacement, which ends up costing the provider more money.
The zergRush exploit has been plugged since november (source: Issue 21681 - android - CVE-2011-3874 - libsysutils rooting vulnerability ("zergRush") - Android - An Open Handset Alliance Project - Google Project Hosting
) It took a while for the patch to be made available, but I know that it has been sent out to the Sony Ericsson Xperia Play (R800i, firmware .62), the HTC Rezound, (newest update killed it) and of course, the Casio Commando.