I would be just as concerned if it was unlocked and unrooted. Nothing stopping a malicious party from rerooting the device after they install their rootkit.
My first thought as well. Maybe rootkits, maybe cruft, maybe spyware. On the bright side if you can find a mfgr system image, you can probably reflash it and be safe.
undersuit|10 years ago
sliverstorm|10 years ago
sliverstorm|10 years ago
mindslight|10 years ago