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77 posts

Master Geek

#233822 4-May-2018 13:08
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Hi all,


I'm having an issue with my Asus RT-AC5300 which is driving me nuts. Last week I upgraded to the latest firmware and backed up my config before I did. After the upgrade I did a factory reset and then tried to restore from the backup I had made. However, every time I do I get a dialog box that says "file format or path is invalid".


I have tried restoring multiple files (I always back up my router before I make any changes to it), but no luck - I always get the same error.


I am wondering if it is due to the fact that I had originally backed up using a Mac and the Asus somehow doesn't like the file that was created. I have copied the files to a Windows machine and made sure there is no default file association with the .CFG files, but once again without luck.


I went thru a ton of troubleshooting with Asus, from factory resetting to upgrading again, to downgrading, etc. But each time I get the same problem. Asus created an RMA for me and the router was swapped out for a new one. But guess what...?? Same issue.


Has anyone ever come across this issue at all, and more importantly how do you resolve it? I have all sorts of DNS, DDNS, static routes and tweaks saved in the backup files and it would take me an eternity to set the router up manually again.


NOTE: I just created a backup file using a Windows machine and successfully restored it (I haven't tried with my Mac as yet), however the previous backup files are the ones I desperately need to access).


Any suggestions? I need to find a solution real quick - family are driving me bloody nuts asking every 5 mins when I will fix it (they miss Roku and Hulu...)







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77 posts

Master Geek

  #2007852 4-May-2018 14:48
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yitz: Quick google suggests renaming might work:

Sorry - I neglected to mention that I also did a Google search and came across this same article. Tried renaming but without luck.


1468 posts

Uber Geek

  #2007900 4-May-2018 15:34
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If you are familiar with using browser development tools, you can try to disable client side validation which may be preventing you from uploading the file.

77 posts

Master Geek

  #2007928 4-May-2018 15:37
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yitz: If you are familiar with using browser development tools, you can try to disable client side validation which may be preventing you from uploading the file.

Thanks for the quick response. I'm not, however I am pretty good at understanding and happy to give it a go. Any chance you could point me to a good tutorial on it?


1468 posts

Uber Geek

  #2007970 4-May-2018 17:01
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Seems renaming the file extension uppercase *.CFG might work.



Looking at the emulator page, I think that's all that's needed...

77 posts

Master Geek

  #2009912 8-May-2018 12:49
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Hmmmm...interesting - that seemed to work. Thanks!


Speeds have dramatically dropped now though - was previously getting 780Mb/s DL and 480Mbs Up, but after the firmware upgrade and restoring backup file, I now only get 520Mbs DL and 300Mbs up while connected via ethernet.

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