dont think its locked ian m8 {atr failure is normaly the wrong comport or software configuration settings}, he's tried other cards with the same atr failure message. {doubt if its a voltage problem}
mickbrush, start from scratch again m8, uninstall/reinstall "minisdk 2.6, manualy set the comport that your proggers connected too then select apply option.
go to set default startup mode and click "normal programer mode then select apply option.
on the next screen select 3.579mhz true phoneix mode, select apply option
dont own a minisdk myself so the software wouldent allow me onto the mainscreen {if your programer still gets the same message then checkout the comport on the pc and the serial lead}