Upgrading from Cisco IOS XE 16.x.x in Install Mode

   Make sure switch is in install mode

Show Version 

   Clean up space

request platform software package clean switch all file flash:

   Copy files 

copy tftp://10.57.1.40/cat3k_caa-universalk9.16.09.05.SPA.bin flash:cat3k_caa-universalk9.16.09.05.SPA.bin

   Set boot variable

boot system flash:packages.conf

   Save  

write memory

show boot system 

   The output should display BOOT variable  = flash:packages.conf . 

request platform software package install switch all file flash:cat3k_caa-universalk9.16.09.05.SPA.bin new auto-copy

   after installed do not need the original file 

delete flash:cat3k_caa-universalk9.16.09.05.SPA.bin

reload