Sign [Q] HTC Hero (Sprint) CDMA - Flashed with GSM Radio


I have a HTC hero (CDMA) phone; flashed with GSM Radio (update-hero-radio-
I just need to know the possibility of the reverting it back to the CDMA Radio.

I have correct cdma radio version and needed softwares, and the bricked phone.
If you need additional details, please let me know.

Can you please let me know what are possible solutions for this?