hi all,
not all the gantry templates have the exact same templatedetails.xml file, so the tutorial should be seen as a general guide.
especially crystalline is a bit more complex because of the colorchooser feature.
to help with the manual update of crystalline, i am attaching some screenshots from my file compare application. please note, that the official crystalline update itself should be out very soon.
on the left you will see the original crystalline 1.5.5 templatedetails.xml, on the right the one from the upgrade.
the blue line shows where in the original file the code got added.
step1: remove extra version tag
(optional)
step2: add mobile positions
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step3: add version element
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step4: add webfonts element
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step5: add smartload element
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step6: add iphone/itouch support
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step7: update the language file
www.rockettheme.com/forum/index.php?f=33..._v=viewtopic#p511513
thanks richard! 
hope this helps, kat