View source for KB 145

===Efficient 5851 SDSL router firmware upgrade===
 Article:145
 Created:2002-12-23 17:31:28
 Categories:
   DSL

====Question or Symptom====
You need to upgrade the firmware on a 5851 SDSL router.


====Resolution====
Efficient Upgrade
  
Make sure it is really an Efficient 5851 SDSL router.  If you do this to an
IDSL router, you will break it.
  
You can download a new version of the router software from the tftp server
at 216.184.2.9.  The following steps show you how to copy the software
across the WAN into the router's flash memory.
  
1.  Log in to the command line interface of the router
  
2.  Copy the kernel software into the flash memory with the following commands:
  
  copy tftp@216.184.2.9:<kernel file name> kernel.f2k
  save all
  sync
  
The "copy" command copies the kernel file from the tftp
server to the router, and renames it kernel.f2k.  The "sync" command IS neccessary.  It makes sure that the software is saved after rebooting.
  
3.  Reboot with the "reboot" command.
  
  reboot
  
The router should reboot and sync back up.  The "version" command will report
the version of the router software that the router is using.  It should now
be version 5.1.0.