IOS for CISCO ubr7223

Hi

i have got an ubr7223 with MC16E and Mc16C card

i need to downgrade the ubr for work the MC16E card an old software IOS

Bootloader
ubr7200-boot-mz.120-15.SC

IOS
ubr7200-is-mz.121-22.EC

does anybody have this software ?

best regards