2013 Sport CVT dealer program update..

I've had my Accord Sport for 2 weeks. It has 31,000 miles. I noticed the jeering as described by others during acceleration and gentle slowing to zero. The dealer said they had a software update.. they performed the update and my accord drove like a different car for about 2 days. It's back.. it worries me so much I purchased an extended warranty. Is anything going to be done about this? Is there anyone or group taking action I can join? Does anyone have high milage yet on there 13 Accord?
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