If methods 1 and 2 didn't work at all, please refer to below.
Step 1. ** Foreigners are required to bring Alien Resident Certificate (ARC)
Bring your student ID card and ID card to the consulting desk of the Computer & Network Center for password change.
Bring your employee identification card and ID card to the consulting desk of the Computer & Network Center to change the password.
Please contact Alumni Association Center for help. ( Extension : 81302 )
Bring your retirement certificate and ID card to the consulting desk of Computer & Network Center for password change.
**Bring your Residence Permit If you're a foreigner.
Please set up the 'Recovery Email' and 'Recovery Phone' according to the instruction, so that you can get the new password directly if you forget the password next time.