Took mine for the 1st oil change (5k @ 8months), also had them do the fix. There is/was a difference, smoother shifts and it no longer hangs in 4th:
http://www.toyota-4runner.org/5th-gen-t4rs/69024-hanging-4th.html
Only bad part is that it took them 2 hours to change the oil and do the update, and I even had a scheduled apt. :rockthrow::ybrick:
Dealers should be FINED for doing oil changes at 5K when they should be happening at 10K -- unless you specifically requested it of course as I know some people do with the first oil change.
The oil change interval is 10,000 miles - dealers should be mandated to inform their customers about this
Thanks for the TSB info - we fall in that range, but I haven't noticed the behaviors (either) so thinking we are not going to have it flashed. On the other hand wife does 95% of the driving in the 4Runner so I will have to take it for a test drive