My truck is a 2021 that I bought new in late May 2021. I had the TSB PIP5823B flash or re-flash update yesterday. Previously my truck had the "no start" at 4,001 miles and a second time at 7,501 miles. Yesterday at the time of the update I had 8,344 miles on the truck with just the two no starts. As a result of the update it does now crank for a second or so before firing. It is noticeable but not obnoxious. My truck has the stop-start feature. After the update the stop-start feature performs exactly the same as it did before the update and there is no lag at all. My two no starts were fairly far apart compared to many on here. I will post if the no start occurs again after the update. Let's hope for all of us that this is the true fix!