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October 24, 2017 Service bulletin

TT: Some vehicles may exhibit an error message when trying to perform a radio software update: "Unable to...

Toyota technical service bulletin T-TT-0339-15_Rev for 2016-2017 Toyota Prius, 2015-2017 Toyota Sienna and 2014-2017 Toyota Tacoma and others.

Bulletin number
T-TT-0339-15_Rev
Component
Equipment: electrical
Summary
TT: Some vehicles may exhibit an error message when trying to perform a radio software update: "Unable to update the software. Please try again later." If the following screen is seen; follow the directions below.

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