1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

RV042-Proper way to upgrade firmware

Discussion in 'Cisco Small Business Routers and VPN Solutions' started by soslink, Feb 13, 2007.

  1. soslink

    soslink LI Guru Member

    What is the correct way to upgrade firmware on a router? I need to upgrade (2) Rv042s and have read the following:

    1. Backup router configuration
    2. Reset router to factory defaults
    3. Download firmware from Linksys and access firmware upgrade page on router, browse to file to proceed.
    4. Reset router to factory settings
    5. Reload (or re enter) router settings

    Are these steps correct?
  2. d__l

    d__l Network Guru Member

    Those are correct if you are being cautious. You can of course download the new firmware BIN file to your computer before you do anything.

    If you want to be ultra cautious, you would disconnect the WANs and all other LAN cables except the flashing computer from the router. Also you want to make certain the power to the router will not be interrupted during the flash by using a UPS. Most people probably don't bother with these steps. Then again sometimes the flashes fail and then those people will blame their bad luck and not their failure to take all possible precautions.
  3. aviegas

    aviegas Network Guru Member

    I would guess the backup is an image of the configuration storage area. If this is correct, then backing up the configuration may be a problem. That's why sometimes it is necessary to reset to factory defaults after an upgrade.

    My proceedure is:

    1) Get fw
    2) Disconnect unnecessary cables (no users during upgrade)
    3) Router is always on UPS
    4) Back up configuration and ensure I have a copy of the current firmware
    5) WRITE DOWN THE CONFIG ON PAPER (or print it) - It can be handy, specially with more complex configurations
    6) Flash it! I do not reset to defaults on my first attempt
    7) Try it. I may work without a problem
    8) If not, reset to defaults and try the backup firmware
    9) If still not working, reset to defaults again and manually reconfigure

    Things to try:

    - Reset to defaults and reflash. Try both the backup and manual reconfiguration
    - Reset to defaults and revert back to the original working firmware. Try again

    I always have all files needed to recover from a bricked router handy. Had to use it a few times.
  4. YeOldeStonecat

    YeOldeStonecat Network Guru Member

    Use Internet Explorer...not an alternative browser.

    Upgrading firmware, if the version you are upgrading to isn't too far ahead of the version the router is on....will usually migrate the settings just fine. I've upgraded literally serveral hundred Linky routers just fine. If the version you're flashing up from is VERY old....and you flash with the latest firmware..the router may revert back to factory default settings...so that being the case, so be aware of settings (such as MAC cloning or PPPoE), or back them up.

    When backflashing a router to an older version of the firmware..the process will almost always revert back to factory default settings during the process.

    Some people feel a comfort level with resetting the router to factory defaults before flashing. Eh..it's your 10 seconds of time....certainly harmless. But in the hundreds of them I've done..I've not bothered with that except in two or three cases when I had a router acting up badly...in which case I think I tossed them anyways because something was up with them. (I think both cases were like the first release of the wrv200...buggy little things)

Share This Page