OTA for WiFi version
I got the May update notification, but I can't find the URL with adb logcat. It automatically downloaded the update and is prompting me for install. I remember it used to ask you before downloading and that's what you could capture the URL. Any wa...
I had this problem too, but I fixed it by clearing app cache in Android settings then clearing cache from recovery. The slider worked after that.
A friend of mine in the US got the 5.1 OTA today and received the I build (coming from LRX22C). He is using a Straight Talk (AT&T) SIM.