Two other issues have emerged from an internal Sprint document leaked by Engadget that reveal the carrier is also addressing a frame-rate cap on the EVO 4G at 30fps and GPS-related rebooting. Neither is reported on the Sprint maintenance release page.
The calendar event edit upgrade addresses a problem the EVO 4G experienced when an Android 2.2 upgrade apparently released a bug that overwrote event descriptions by their locations when they are opened. The bug forced users to re-enter the event description in the "where" field if they went in to change a time.
In order to download the upgrades, Sprint's community forums page says EVO 4G users need to go to the home screen on their device and tap: menu/settings/system upgrades/HTC software update. The device will automatically download and install "any available updates."
The new software version is 3.29.651.5.
The upgrade for the HTC Hero deals with "dialer sluggishness." To update the software, users need to go to All Applications and tap: Settings/About Phone/System Updates/HTC Software Update, then select Check Now and follow the instructions on the screen to download the update.
Sprint advised users that the updates will take between 5 and 10 minutes to download and 5 to 10 minutes to install. A battery life of at least 40% is recommended. Since the phone may need to be powered off and then back on for the software upgrade to take effect, phone calls can't be made. The carrier also said that the upgrade may be released in stages and if users don't see the changes on their phone right away, to "please be patient."