If you have a ZD with Support you can download either flavor of R610 AP code (Solo/Standalone or Unleashed), and using factory default, you can convert it to run either one.
If your AP has not been managed by your ZD yet, a 901-R610-xxx part number means it has Solo image, and 9U1-R610-xxx means it's shipped with Unleashed.
Factory default (indented pin for 8+ seconds before release), will always reset IP to 192.168.0.1 with uid/pw of 'super'/'sp-admin'.