redsn0w/4S 5.1.1 service wouldn't start (3985) error

snowtrooper1966

Genius
Gold
Dec 10, 2009
2,589
1,316
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Clarksburg, WV
Gretings!
Attempted to JB my neighbor's 4S running 5.1.1.
Tried Absinthe and got something like "device not supported", so tried latest redsn0w and got "service wouldn't start (3985)" error.
Tried both methods with phone as is and wiped.
Any thoughts?