.Copy the firmware file to the flash:
2. For the new firmware to take effect, reboot the device.
3. The "Show dsl interface atm 0" output gives the details of the firmware
file in use
Note:
- The firmware file should not be renamed when being copied to the
flash , Since the router looks for the presence of file named
"adsl_acl_firmware_4_10_158.bin" to initiate the flash upgrade process
- If IOS is now able to find a valid firmware in the flash then it
would always use that rather than the firmware embedded in IOS .If users
want to use the embedded firmware, they have to ensure that there is no
valid firmware file in flash.