I found this method to be by far the easiest way to root you HTC Eris. It worked for me perfectly. And I've used it for all my friends with Eris's.
Directions:
1. On your phone, open the Android Market.
2. Search "1 click root" by pressing the search button.
3. Locate the app called "HTC Eris 1 Click Root App"
4. Download and install that app to your phone.
5. Open the app after it installs
6. There will be a button that says "I agree, root me"
7. Follow the directions listed on the screen.
Congratultions! You're phone should now be successfully rooted!
Notes:
- When you read the app description in the market it says it is a "try before you buy" app. And that you must donate to an organization after a period of time. I deleted the 1 click root app and never was told to donate.
Directions:
1. On your phone, open the Android Market.
2. Search "1 click root" by pressing the search button.
3. Locate the app called "HTC Eris 1 Click Root App"
4. Download and install that app to your phone.
5. Open the app after it installs
6. There will be a button that says "I agree, root me"
7. Follow the directions listed on the screen.
Congratultions! You're phone should now be successfully rooted!
Notes:
- When you read the app description in the market it says it is a "try before you buy" app. And that you must donate to an organization after a period of time. I deleted the 1 click root app and never was told to donate.