I tried rooting my eris last night I threw the PB00IMG.ZIP file on the root of the SD card and installed it. It took about 10 minutes for it to install and fully reboot and re-sign in to my google account. I don't have the little ninja icon in the apps drawer like I would expect and when I try to use ADB to flash the new recovery it says "su" not recognized. However, I was able to install set CPU 2.0 and it asked for root permission and it works and goes to the max of 528Mhz does this mean I'm rooted because Set CPU is working? I'm running the OTA 2.1 stock version on my eris, should I have reverted back to 1.5 then installed the PB00IMG.ZIP to give me the rooted 2.1?