This is a false statement. I have had my 928 replaced under the warranty, while running GDR3 preview.Dev preview app, wp central say that it may void your warrenty. I contacted Nokia about it and they confirmed it. As much as I want to upgrade with dev preview, i wont. I cant risk it.
Correct. But you'll want to check for updates once you read that the update is available. The phone only checks for updates once a week.If I understand your question correctly, after you dev-unlock your phone, you shouldn't have to do anything else. I don't believe you can revert your phone back either, it will remain unlocked, so you should get the 8.1 update once it's available.
