I have a 1720 router that originally shipped with ios 12.1 on it. I bought a WIC-1enet that is not supported by that IOS version.
I have ios 12.3 now and a larger flash card. The shipping card was only
4 meg, I went to a 16 meg card to max the router.I uploaded the ios image over ethernet and it passed the checksum and crc checks but the router doesn't boot into ios.
the bootstrap version says 12.0(3)T and it cycles through that two or three times and then it will either go to rom mon mode or it will continue to cycle until I hit control break to go to rommon mode manually.
I have a few versions of ios from my company's IT department (we have
1720's in the field for sales people)and at this point I'm wondering if the flash card is bad or if something else is going on with this router.
The wic card is out of the router to make sure it's not messing with something in the setup.
I'm uploading the 12.3 rom again over xmodem to see if I had a bad load.
Any help with this would be greatly appreciated.