i have below list of files

aro_tty-mIF-45875564pmo_opt

aro_tty-mIF-45875664pmo_opt

aro_tty-mIF-45875964pmo_opt

aro_tty-mIF-45875514pmo_opt

aro_tty-mIF-45875524pmo_opt

need to rename to 

aro_tty-mImpFRA-45875564pmo_opt

aro_tty-mImpFRA-45875664pmo_opt

aro_tty-mImpFRA-45875964pmo_opt

aro_tty-mImpFRA-45875514pmo_opt

aro_tty-mImpFRA-45875524pmo_opt


pls help me out.

Regards
Udhay