This is all correct. While there have been A5/A6 jailbreaks, none have been at a low enough level (not a bootloader exploit) to provide the facility to load a r

This is all correct. While there have been A5/A6 jailbreaks, none have been at a low enough level (not a bootloader exploit) to provide the facility to load a ramdisk so none of the above tool methods are compatible.