Cisco 1760 router wont load past rommon

Question

Hello, after reset to factory defaults("write erase") and writing command "write memory" (by a mistake...just wanted to save config....and forgot that on cisco its "copy running-config startup-config"). Router wont load past rommon now(i see in console error messages):

loadprog: bad file magic number: 0x0

boot: cannot load "flash:"

But i can manually boot it past that by typing in terminal(via console):

rommonX> BOOT=flash:c1700-adventerprisek9-mz.123-14.T7.bin

rommonX> sync
rommonX> i

Router is Cisco 1760, IOS ver is

Cisco IOS Software, C1700 Software (C1700-ADVENTERPRISEK9-M), Version 12.3(14)T7