My phone took the July security update yesterday afternoon and I didn't realize it until right before heading out to dinner with my motorcycle club. Since I needed my phone for navigation, I skipped the "Restart now to complete..." figuring I'd wait and reboot the phone when I got home later in the evening. The phone was fine all through dinner. But when I went to leave, I put the phone in the handlebar cradle, connected to my BT helmet headset and started to call my wife to let her know I was on the way home. The call didn't go through, and when I looked down at the phone, it was going thru a continual boot sequence. Finally got that stopped only to get a "com.android.phone has stopped" error and automatic reboot to a recovery screen where my only options were 1) try again and 2) Factory data reset. Not much trouble shooting was going to happen while actively trying to ride a motorcycle. When I got home, I was finally able to get into full recovery, but it didn't much good and in the end I was faced with an FDR and subsequent restore from Google Cloud backup.