C9 error code 18001 upgrade unsuccessfully because the length of the upgraded file is incorrect
* I DO NOT HAVE A AC50, but my model wasn't listed so I just picked one because it wouldn't let me post a thread without a model indicated.
I have an Archer C9 and was not sure if it needs to be updated to newer firmware. I purchased it new and don't think it has ever been updated.
On the routers tplinkwifi.net setup page it says the version I have is:
3.17.0 Build 20150514 Rel.70681n
And on the TP link download page it says the newest version is:
Archer C9(US)_V5_190403
I went throught the procedure, unzipped and tried to do the update and got this message, "Error 18001: upgrade unsuccessfully because the length of the upgraded file is incorrect". I was connected with ethenet cable.
1. Could anyone tell me if I really need to update, and how can you determine that? What numbers or versions or what would I look at?
2. And what am I doing wrong to get the Error 18001?
TIA
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Can you provide a screen shot of your firmware update screen. We would like to see the current hardware and frimware version you are using. We want to try and replicate the issue here and need this information to test.
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Ok, so if my router is V1 I will use V1 firmware.
So when I go to the TP Link download page "tp-link.com/us/support/download/archer-c9/v1/#Firmware" for the Archer C9, and choose V1 from the drop down box, there it lists the newest V1 download as "Archer C9(US)_V1_180125" (2018-02-12)
Would that be the one to download and install?
And, how can I tell if that is the one I already have now in my router?
Would I ever want to, or need to install V2 or V3 or V4, etc?
Thanks.
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I am a rookie when it comes to wifi/router setup, so I appreciate your help.
1. It appears there were two prior updates to the most current that I never installed, (unless it does that automatically?).
2. Do I need to install the prior updates before I install the most current one?
3. To restore my settings after update is installed, can I go to the settings in tplinkwifi.net and go to "backup and restore" > click on browse > search for my previously saved backup of current settings > then click on restore?
4. Or is there a Default setting that I should use instead of a saved backup of current settings?
5. Is this update fairly routine or is there a chance to turn my router into a brick? I would not have any idea what to do if that happened and that makes me a little nervous.
(I do know enough to hook my Windows 10 laptop up to the router with ethernet cable instead of wireless for the update)
Thanks!
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Great tips! Thank you!
I don't have anything wired hooked up to the C9, (except the modem but of course that has to stay;-)
However, we are about to leave town for a while and we need the wifi on for home security and temperature/water leak detection. So I am hesitant to try it now just in case there is an issue I wouldn't have time to troubleshoot it by the time we leave, or in the worst case senario replace it.
I have a timer on the router and the modem to shut it down for a few minutes and restart it every week. And the C9 router is working fine.
I realize it is an older router and I was just concerned if there were any important security updates that would be neccessary to update to.
Maybe I'll wait until we get home so I have time to work with it.
My only concern is your statement, "The latest update does fix a security breech so it should be done".
That makes me a little nervous... :-(
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