Upgrade from 03.06.04 - 16.3.6———————————————-copy usbflash0:/cat3kcaa-universalk9.16.03.06.SPA.sit.bin flashsoftware install file flash:cat3kcaa-universalk9.16.03.06.SPA.sit.bin newORsoftware install file usbflash0:cat3kcaa-universalk9.16.03.06.SPA.sit.bin newupgrade from 16.6.1 - 16.3.6———————————————request platform software package install switch all file flash:cat3kcaa-universalk9.16.03.06.SPA.sit.bin new auto-copycommand that might be useful:show usbflash0:show flash:show ver inc INSTALLshow switchboot flash:packages.confshow bootReference.
1# Upgrade Firmware of Cisco 3850 24T-S (INSTALL MODE) by copying FW from TFTP to Switch Flash DirectoryRead these first on BUNDLE vs INSTALL mode.Last week we received new Cisco switches shipment having model WS-C3850-24T which will be replacing existing 3750 stack series in our data center. These switches have 2 methods of booting and running IOS XE software (in 3850). By default, the switches comes with INSTALL mode.Before Upgrading Firmware,we need to check for current mode in which the switch is currently booted in. It should be INSTALL mode. Show version begin Switch PortSwitch Ports Model SW Version SW Image Mode-. 1 32 WS-C3850-24T 16.3.5b CAT3KCAA-UNIVERSALK9 INSTALLConfiguration register is 0x102We can use local USB as well to copy the firmware but since I already have TFTP for centralized backup for all Cisco switches therefore I am using TFTP method in this post.Having TFTP server will give more leverage of doing various luxuries.
3850 Software Install File Free
Copy the latest firmware to TFTP and then from switch console download the switch upgraded ISO and upload it to TFTP root folder. At the time of writing latest IOS XE version for 385024-T-S is cat3kcaa-universalk9.SPA.03.06.08.E.152-2.E8.binConnect to switch by ssh/telnet or by console and issue following command copy tftp: flash:Address or name of remote host ? 192.168.0.1Source file name ? Cat3kcaa-universalk9.SPA.03.06.08.E.152-2.E8.binDestination file name ? Cat3kcaa-universalk9.SPA.03.06.08.E.152-2.E8.binAfter some minutes the new IOS will be downloaded to flash directory. In my case it took around 90 seconds to copy 291 MB IOS EX file.