The following is an unsigned 2.1 update with the recovery image removed. This will allow you to upgrade to 2.1 and keep your current recovery image. To use this, reboot into recovery mode, choose install and then install update.zip.
Next is a rooted nandroid backup of 2.1. It has busybox and adb enabled by default. This version does not include the baseband like the top version.
f7756ddf9291eb3825b77f6c1292aa01 2.1 rooted.zip