View source for Loading IOS on an ASR 1001 Router

* Cabling
** Connect to the serial console
** Connect the MGMT interface to your LAN
* Configuration via Serial Console
** Quit the config dialogue
** Configure Interface <code>GigabitEthernet 0</code> (that's the MGMT Interface, actually) to a static address in your LAN and un-shut it.
** Check if it works: <code>ping vrf Mgmt-intf 192.168.1.11</code>
** Copy the new IOS file via TFTP (SCP doesn't work) to bootflash: <code>copy tftp: bootflash:</code>
** Alternatively, you can put the asr image on a FAT32 formatted USB thumb drive and plug it into ''USB0'' of the ASR router. Then, you can copy it to ''bootflash'' like this: <code>copy usb0:[filename] bootflash:</code>
** Unset the BOOT variable (in conf mode): <code>no boot system</code>
** Set the BOOT variable to the new image (in conf mode): <code>boot system flash bootflash:asr1001-universalk9.03.08.01.S.153-1.S1.bin</code>
** <code>write memory</code>
** Check the BOOT variable with the <code>show bootvar</code> command, it must now look like this: 
*** <code>BOOT variable = bootflash:asr1001-universalk9.03.08.01.S.153-1.S1.bin,1;</code>
** <code>reload</code> the router and check it boots the right image.