Cricket Wireless might not be among the major carriers in the country, but it does cater to about 4.6 million customers, who would be happy to find out that the Sanyo Zio by Kyocera can now be updated to Android 2.2 Froyo. You can update your Zio over a Wi-Fi network or simply go to a company-owned retail store where you can get the same update in ten minutes. Currently, the handset runs on the dated Android 1.6.
Cricket also warns you that their servers might be busy with many simultaneous updates and if you get a “no download available” message you should just retry when traffic slows down later in the evening. You still have to do a manual check on you Zio to see if the update is available. The path for this would be:
Menu > Settings > About Phone > System Update > Select “Check for update”
Android 2.2 brings a lot of features, but most notably – a boost to the performance of the Zio via improved management of the memory. The update process should be pretty straightforward, so when you're done let us know how it worked on your Zio!
source: Cricket Wireless (Facebook)