There have been lots of 2.1 ROMs out there but I haven't switched for my Hero on Sprint. I will NOT download the Sprint version of 2.1 because (a) it will not be optimal and (b) it supposedly will close exploits to allow root access. I have my Hero rooted and with a custom ROM. As Hayaku pointed out, developers are lighting fast to come up with a better version of whatever the carrier is putting out. I will be waiting for Sprint's 2.1 update to be improved, then I'll update and keep root access.

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