This of course will only work if the new IOS image file is not corrupted in any way.

Depending on the number of ports (12,24,48), this might need enough time for a decent lunch break. That will be taken care of automatically upon first boot of the new IOS. Hint: it is very possible that when upgrading from IOS 12.2(53)SE2 to 15.2(4)E6, there will be a microcode upgrade to the ASICs. Saves an immeasurable amount of time and avoids most kinds of errors that can happen, even sets the boot system flash. commands to upgrade a 3750, especially when upgrading a switch stack. I can still see it, and the space isn't released. It doesn't give an error, but the file is still in the folder. I tried del /force /recursive flash1:filename, but didn't work.

once booted up, go into config mode and use the boot system flash flash:/path/file.bin (in your case: boot system flash flash:/6.bin) command, so that it points to the correct IOS image file. I need to delete a flash file (upgrading IOS on Cisco 3750) but there isn't enough space for the new IOS.

at the rommon> prompt, type boot flash:/6.bin (because that is the location and filename of the new image uploaded to the switch).

30sec) the procedure is also described in various FAQs related to password recovery of 2960/3560/3750 switches.

(keep the mode button pressed while power-on for ca. (if needed), force the switch into rommon with the mode button procedure.Probably, you just need to wait through a boot cycle, and it will present you with a rommon> prompt There is no need to copy the original image back, just manually force the switch into rommon and make it load the new image. The boot variable says that the IOS image file should be searched at the following path:įlash:/2/Īnd as it seems, neither directory flash:/2/ nor file are there any longer. To specify which IOS image the router should load next time it reboots, use the boot system command: Router1 configure terminal Enter configuration.

Cisco 3750 firmware upgrade