I have been running the US version of the C9 V1 firmware on my UK C9 V1 for a week or two with no problems. It seems to run OK on PPPoE.

OK I loose a couple of channels but I also gain some on 5hz, and the broadcast wifi strength might be slightly better.

The CPU/Memory monitor has disappeared.

The router now also now uses some of the latest adopted UK 5hz range (band C) see:

http://bowdennetworks.co.uk/downloads/5GHz Spectrum Usage UK - 2017 - v1.pdf

My logfile is now much cleaner also.

If they are not going to issue new firmware for EU C9 V1 routers then for now I am happy to use the US firmware - things like DD-WRT seem to be a bigger risk in terms of reliability and support.

I may have to regress one day if I ever hit the wall on a specific feature (I doubt it - I am a simple user), so I will be keen to hear what you find out. A hardware reset perhaps?

Some more background info on the above here:

https://www.ispreview.co.uk/index.php/2017/03/ofcom-confirm-plan-boost-uk-wifi-network-speeds-via-5ghz-band.html

https://superuser.com/questions/339571/wifi-router-region-setting-what-does-this-affect-transmission-power

Discovered my first little glich today. My old LG G3 phone running on a linageos 7.1 custom rom was not picking up 5hz only 2.4hz.
Obviously the European LG G3 has not been upgraded to the new UK 5Hz spec and my router is now running on 5hz channels 153+157 by default (you can change this via the router options to one in the UK pre-2017 range if you prefer).
In the LG G3 wifi advanced options I was able change the region code from europe to USA and it now connects to 5hz fine.
I am not expecting any wifi problems when out and about and my phone can now connect to a wider range of signals.
The option is there to choose a UK 5hz channel on the router if you want. I like the benefit of being currently outside the range of all my neighbours and their devices as they are probably all running on the old UK spec.

mazhdrak wrote

Model :

Hardware Version :

Firmware Version :

ISP :

Hello guys,

Yesterday, by mistake i've installed the latest US firmware Archer C9(US)_V1_180125 for my v1 version.
However now i am unable to change the region and also i am unable to flash to a UN or EU firmware. It shows "Error code: -5533"
Any ideas?

Thanks,

Hey, generally speaking, the US version is only used for US product.
Therefore, we can't change the region if you install that.

Once we update to US version, we can't update to EU/UN version any more.

I have noticed a 'bricked router procedure' that might enable the US version of firmware to be changed - see: https://wiki.dd-wrt.com/wiki/index.php/TP_Link_Archer_C9

The US version of the firmware upgrade probably replaces the Bootloader and locks the router down to meet FCC requirements - so it may not work.

Please note I have not tried the above - and it could brick your router.

If it did not work, then there would probably be a need to re-flash a rom and that is quite difficult (soldering iron etc) or try the US version as recovery.

Model : Archer c9
Hardware Version : V1
Firmware Version : Just upgrade from "Archer_C9(UN)_V1_160517" to "Archer_C9(US)_v1_180125"
Location: Hong Kong

Same problem: Searching TP-Link Chinese website and got a firmware 180125. After an upgrade, couldn't change the country and many useful functions such as CPU resource, device name, etc are disappear. And throughput performance seems unstable.

The TP-link chinese web site didn't show any warning message on the firmware 180125. Only old version firmware "Archer C9(US)_V1_161008" shows the warning message. It makes me though it is suitable for Hong Kong region.

Pls state what method it can downgrade the firmware and back to Archer_C9(UN)_V1_160517. Or pls state when TP-link can issue a new firmware for UN/EN region.

Hey, you may have a look at the following link.
http://forum.tp-link.com/showthread.php?81462-How-to-recovery-the-router-when-you-bricked-it&highlight=fitz

Hope you usccess..

Aprilcoco wrote

Hey, you may have a look at the following link.
http://forum.tp-link.com/showthread.php?81462-How-to-recovery-the-router-when-you-bricked-it&highlight=fitzw

Hope you usccess..

Thanks for the link, you're my hero!

The link can't work. The download process is successful. but the router still using same firmware version 180125. So, after reboot, nothing change.
Is there any other method to fix the firmware issue?

Model : Archer C9Hardware Version : v1Firmware Version : C9(US)_V1_180125Issue: Shouldn't be using US FW. Cannot flash back C9(UN)_V1_160517

Aprilcoco wrote

Hey, you may have a look at the following link. http://forum.tp-link.com/showthread.php?81462-How-to-recovery-the-router-when-you-bricked-it&highlight=fitzHope you usccess..

Already tried. Shows that it is successful but firmware remain the same. Do I need to perform 30/30/30?

ORIGINAL POST

https://community.tp-link.com/en/home/forum/topic/151501

 

 

=========================================ENGLISH... BELOW IN PORTUGUESE=========================

 

(sorry for my bad english) To help anyone who has this problem of error 5533 for updating to the latest firmware in the USA and not being able to go back to the European firmware .... I got in touch with TP-LINK's own support and I will go step by step how to do it. .. come on:

1 - download the archer c9 TP-LINK test firmware so that you can release the European firmware application and other firmware back on your router following the link from the tp-link support itself

main link:

http://support.tp-link.com/f/e918e5badc

 

or from this mega or 4shsared link if the above link is no longer accessible

 

bakup link:

https://mega.nz/#!UdJnVQSR!3aoP5lIZ-y0QjNzyCD-JaYvpsyc-ftvE2c_oVBMcBP4

https://www.4shared.com/file/bdtQmsHbfi/c9v1_un-up-ver4-1-0-P312016051.html

 

this version above is the c9v1_un-up-ver4-1-0-P12002[20180223-rel35954].bin

 

that is in this link above (it is a test version that you will have to apply in order to release your router so that there is no more error 5533

 

after that done, download the most current European firmware and reinstall again in this link

 

https://www.tp-link.com/en/download/Archer-C9_V1.html#Firmware

 

The most current date of this post is the version -------     Archer C9(UN)_V1_160517

 

After updating with the latest firmware Archer C9 (UN) _V1_160517 and restarted your router restore it TO THE FACTORY STANDARD.

ready error 5533 problem solved 

 

 

================================ORIGINAL IN PORTUGUESE=======================================

 

Para ajudar quem teve este problema do erro 5533 por ter atualizado para o ultimo firmware dos USA e nao conseguir voltar para o firmware europeu.... eu entrei em contato com o suporte da propria TP-LINK e passarei passo a passo como fazer... vamos la:

 

1 - baixe o firmware de teste da TP-LINK do archer c9 para que possa liberar no seu roteador a aplicaçao do firmware europeu e outros firmware de volta segue link do proprio suporte da tp-link

 

link principal: 

http://support.tp-link.com/f/e918e5badc

 

ou deste link do mega ou 4shsared caso o link acima nao esteja mais acessivel

 

link reserva: 

https://mega.nz/#!UdJnVQSR!3aoP5lIZ-y0QjNzyCD-JaYvpsyc-ftvE2c_oVBMcBP4

https://www.4shared.com/file/bdtQmsHbfi/c9v1_un-up-ver4-1-0-P312016051.html

 

esta versão acima é a c9v1_un-up-ver4-1-0-P12002[20180223-rel35954].bin que esta neste link acima (é uma versao de teste que você tera de aplicar afim de liberar seu roteador para que nao de mais o erro 5533

 

apos feito isso, baixe o firmware mais atual europeu e reinstale novamente neste link

 

https://www.tp-link.com/en/download/Archer-C9_V1.html#Firmware

 

o mais atual ate a data desta postagem é a versao  -------     Archer C9(UN)_V1_160517

 

 

apos atualizar com o firmware mais rescente Archer C9(UN)_V1_160517 e reiniciado o seu roteador restaure ele PARA O padrão DE FABRICA. 

 

 

pronto problema do erro 5533 resolvido