Flashing Linksys WRT1200AC

[g7ivp]

Hello,

I guess this might sound like herecy but can anyone help me remove/overwrite/rollback an LEDE image to the stock image for my router?

As an experiment I flashed it with LEDE Reboot 17.01.5 but I cannot revert to the previous image. I have tried to get image files into the router but tftp doesn't seem to be running. I can connect with putty but don't know what to do once I'm in.

Any pointers would be greatfully received.

[lleachii]

@g7ivp

but tftp doesn't seem to be running

Use the wget command to download the previous image to /tmp. You must use HTTP (not HTTPS).

[anomeome]

or you can scp the image to /tmp, but you will probably have to ssh in and:

sysupgrade -F -n imagename

to flash an OEM image over the current OpenWrt install.

[g7ivp]

Thanks but I got: "Failed to establish connection" when I tried wget and I don't know how to use "scp"

[anomeome]

scp with the PuTTy package is a PITA, easy with the cmder stuff (YMMV). Not sure, but IIRC, the need to use sysupgrade -F from above may be negated by the 18.06 stable release; i.e. you may be able flash OEM from the GUI.

[JW0914]

@g7ivp

As an experiment I flashed it with LEDE Reboot 17.01.5 but I cannot revert to the previous image

Perhaps the WRT AC Series ToH could be consulted...

• OpenWrt >> OEM
• Firmware Recovery
  
  

@anomeome

scp with the PuTTy package is a PITA

Please elaborate, as the only difference between using scp vs pscp is five characters: pscp -scp, all other parameters are the same.... see the Flash tab

[g7ivp]

Sorry, what is "PITA" and " cmder stuff (YMMV)"?

I'm new here and to Linux but I desperately want to break away from Windows.

I am trying to get the image (which I downloaded from Linksys) into my router (so I can try the sysupgrade -F) from a Windows 7 PC using putty. I have tried several variations in syntax (e.g. scp guest@192.168.1.188:Temp\FW_WRT1200AC_1.0.5.187766_prod.img /tmp) but keep getting "Connection refused". The file is in a Share called Temp (with permissions set for Everyone to Read) and the guest account is enabled on the PC. TIA.

[hnyman]

@g7ivp

I am trying to get the image (which I downloaded from Linksys) into my router (so I can try the sysupgrade -F) from a Windows 7 PC

Why not use a Windows scp tool with GUI ? e.g. WinSCP

[g7ivp]

Thanks but I tried WinSCP and can't connect to my PC.

[g7ivp]

I just came up with another idea: why not use the USB port on the back of the router?

I copied the image to a USB stick, plugged it in and re-booted the router.

What do I need to do to mount the USB stick?

[Per]

If putty can connect using SSH then Winscp will also work. You're supposed to use it on the PC to connect to the router. Make sure it uses the SCP protocol.

[JW0914]

• Unless you flashed OpenWrt to both partitions, you can swap back to the partition with OEM firmware on it via Firmware Recovery.
  
  
• I'd also recommend reading SSH Access for Newcomers
  
  

@g7ivp

Sorry, what is "PITA" and " cmder stuff (YMMV)"?

• Pain In The A**
  • As I mentioned previously, the only difference in parameters for using scp with PuTTY's pscp is specifying pscp -scp in lieu of scp
    
    
• Cmdr is a terminal emulator for Windows (I personally prefer ConEmu).
  
  

@g7ivp

I am trying to get the image (which I downloaded from Linksys) into my router (so I can try the sysupgrade -F) from a Windows 7 PC using putty. I have tried several variations in syntax (e.g. scp guest@192.168.1.188:Temp\FW_WRT1200AC_1.0.5.187766_prod.img /tmp) but keep getting "Connection refused".

Your syntax is wrong, however it's not your fault, as the ToH was wrong (it's been corrected to show the proper <source> <destination> order).

• SCP command should be [issued from Windows]:

  pscp -scp -r -i "C:\OpenWrt.ppk" -2 -P 22 "D:\Path\To\Firmware.img" root@192.168.1.1:/tmp
  

  • See the Flash Tab (2.b) for explanation of parameters
    
    

@g7ivp

Thanks but I tried WinSCP and can't connect to my PC.

When installing WinSCP, choose the Commander option [which is default] versus Windows Explorer mode, as this allows displaying Windows mount points on the left hand window and the router's filesystem in the right hand window.

• Prior to making the connection in WinSCP, you must edit the connection option to change File Protocol from it's default (SFTP) to SCP.
  
  
• Configure your SSH profile for the router in PuTTY first, then on WinSCP, click the Tools drop down and select Import Sites... this will import your PuTTY connection profiles
  • There's a pre-built PuTTY profile linked to the in the ToH (Flash Tab >> CLI (1.b.I) & (1.b.II))
    
    

@g7ivp

What do I need to do to mount the USB stick?

Since the USB storage wikis leave much to be desired:

1. Ensure proper kmod is installed for the filesystem the USB drive is formatted with:
   opkg update && opkg find kmod-fs-*
   a. If the file system used is not listed: opkg search kmod-fs-*
   
   
2. Install the file system kmod
   opkg install kmod-fs-<name>
   
   
3. Find the partition and mount it
   a. block info
   b. mount /dev/sda1 /mnt
   • Where sda is the usb drive and 1 is the partition number you wish to mount

[g7ivp]

Thanks everyone, especially Per, I have finally go where I wanted to be - Stock Image installed - but not too sure how I got there. I have a lot of reading up to do.