Not the answer I was hoping for, but it is still appreciated. It is somewhat mind boggling that Toyota would build (or contract with someone who would build) what is essentially a computer without a recovery mode. At least I now know what to look for in aftermarket units.
From here, you can register and manage your Entune App Suite account. To begin, you will need to set up an account so that you can use the Entune App Suite inside your vehicle. ©2008-Toyota Motor Sales, U.S.A., Inc. All information applies to U.S. Vehicles only. Search for “Entune” in your respective app store (Apple or Android ™) to download the Entune ® App Suite app. With the Entune ® App Suite app, you can register and link your third-party apps (iHeartRadio and Slacker Radio), all via your mobile handset. Sep 22, 2015 Toyota Entune Forum User forum for all things Toyota Entune. Latest operating system on phone, app is running, update message appears but it's always 'download unsuccessful'. Toyota says it uses cellular data for the download and if the signal is weak, this might be the problem. The app runs fine using wifi so the download should work. We would like to show you a description here but the site won’t allow us.