The upgrade to Android 2.2, otherwise known as Froyo, isn't going so smoothly for handset makers, especially Motorola.

One problem is that the original Motorola Droid, whose Android 2.2 rollout began earlier this month, can't handle in its hardware many of the advanced functions the Froyo update brings, such as tethering or becoming a mobile hotspot. It also doesn't come with Adobe Flash 10.1. A second update coming in subsequent weeks will bring Flash to the Android market.

For owners of the Motorola Milestone, the Droid version overseas, Froyo isn't expected to come until late in the years and only Europe and Korea. The Android 2.2 update is "under evaluation" in the Canadian, Latin American and Mexican markets. Then there are other pre-2.1 versions of Android that won't get the update at all. Other Android 2.1 versions, such as the Cliq, don't really have a time line for Froyo.

Users have been taking it upon themselves to update their phones using a leaked Android 2.2 ROM, which became available through unofficial sources. But Motorola has sent a cease and desist letter to any website hosting the update, according to a post in IntoMobile.

Meanwhile, HTC Incredible users are still waiting for the Froyo update, while the new Dell Streak will run on Android 1.6 until the end of the year. It's unknown when Samsung Galaxy phones will get Froyo, but they are expected to receive the update.

For more:
- see this PC World article
- read this IntoMobile article

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