You can stop flashing your devices with leaked OSes if you use windows phones. Reason is it has been confirmed that from the next one week you should start seeing notifications for Windows 7.5 Mango for update. The Where’s My Phone Update? table will be refreshed to show how the rollout will come worldwide.
You can expect your windows phone to get software update from your handset manufacturer, which will happen to be customized for your type of phone.
Here is what Eric Hautala of Windows phone blog says:
Since your phone requires the proper firmware to function as designed, my advice is simple: steer clear of bootleg updates and homebrew tools.
By the way, in case you missed it, we recently released new versions of both the Windows Phone 7 Connector for Mac and the Zune software for PCs, which you’ll need to update your phone. If you haven’t already, I encourage you to install it. I think you’ll like the update-related improvements, which speed up the overall update process and give you more control over backups. A small favor: When you update to Zune 4.8, you’ll be asked to participate in improving the update process. Please consider doing so.