in 7.3, its not pz01 anymore as its meant for ITS, You need to check these customisaiton
http://scn.sap.com/message/8745492
check the customisation for it in PZ01C
we can recommend you to check the next wiki related to the upload of
employee photos:
https://wiki.sdn.sap.com/wiki/display/ERPHCM/EmployeePhotoUpload
check
Notable to upload Photo in Change Own Data
T77S0:
ADMIN PHOTO HRICOLFOTO