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[zenomicon]

I own a DIR-636L router and have done some firmware tests because I was not satisfied how it performed starting with firmware 1.01. So here are the results :

> FW 1.01 - Limited Connectivity on WiFi when waking up from sleep

> FW 1.02 - Once every few days it starts acting up, dropping WiFi randomly no matter if downloading or not

-----------------------------------------------------------------------------------------------------

> [MOST STABLE] FW 1.03 - [EDIT : GREATS NEWS] I experienced occasional WiFi drops in the first week of use, however it appears to have magically stabilized. Not a single drop for more than 3 weeks now.

  >> after trying different combinations of settings for testing FW 1.03, these are the settings which make the router as stable as possible :


   * Advanced DNS Services > OFF
   
   * DNS Relay > ON

   * QoS Engine > DISABLED

   * Firewall Settings > SPI OFF

   * Wireless 802.11 Mode > 802.11n ONLY >better speed<

   * Advanced Wireless > WLAN Partition OFF

                                > HT 20/40 MHz Coexistence > ENABLED >better speed<

   * Wireless Settings/Manual > Enable Autochannel Scan > DISABLED

   * Wireless Channel > MANUAL (search for a free one)

   * Channel Width > AUTO

   * WPA Mode > WPA2 ONLY >better speed<

   * Cypher Type > AES >better speed<

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> FW 1.04 - Highly unstable (drops WiFi connection often when downloading)

> FW 1.05 - Highly unstable (drops WiFi connection often when downloading)

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>> Region : Central Europe

>> ISP Service : Cable (PPPoE)

>> A factory reset was performed before and after the firmware update and set up from scratch.

>> SSID was changed from default

>> Wireless mode - Auto

>> Security mode - WPA Personal

>> Wireless device used - Notebook / Smartphone

>> No cordless 2.4 or 5 Ghz house phones or WiFi APs nearby

>> WiFi routers in the area - around 10 different routers


Hope it helps!

[FurryNutz]

Link>Welcome!

Thank you for the feedback and information

• What region are you located?
• Was a Factory Reset performed before and after any firmware updates then set up from scratch?

FW Update Process

Internet Service Provider and Modem Configurations

• What ISP Service do you have? Cable or DSL?
• What ISP Modem Mfr. and model # do you have?

Wireless Configurations
Links>Wireless Installation Considerations and Managing Signal Congestion and Good Neighbour Policy

• Ensure the default (dlink) SSID name is changed. Can be anything and not something that's already in use by any neighboring WiFi routers. Under Setup/Wireless/Manual.
• What wireless modes are you using?
• What security mode are you using?
• What wireless devices do you have connected?
• Any 2.4Ghz or 5Ghz cordless house phones or WiFi APs near by?
• Any other WiFi routers in the area? Link> Use InSSIDer to find out. How many?

Router Placement
Forum User - "Well I feel really dumb. After moving the router away from other electronic devices my speeds are back to normal. Just a heads up for anyone experiencing slow speeds, you might want to move it away from other electronics and see if that helps."
3-6' feet minimum safe distance between devices.
Placement on main level floor and central in the building and WELL ventilated is preferred. Not in basements or closets as building materials, or near by electronics devices could interfere or hinder good signal propagation.

[FurryNutz]

> FW 1.04 - Highly unstable (drops WiFi connection often when downloading)

> FW 1.05 - Highly unstable (drops WiFi connection often when downloading)

Does this happen also if you connect hard wired LAN cable to the router with your test PC?

[zenomicon]

LAN Connection works well, this only happens on WiFi, but keep in mind my tests were more WiFi oriented and therefore the tests were done more extensively in this area rather than on LAN.

Regards~

[FurryNutz]

What ISP Modem Mfr. and model # do you have?

Can you connect a wired LAN PC to the router and put some source files, 500Mb to 4Gb in size, on this PC and share out the folder. Then connect your wireless test PC to the router and do some Read and Write operations to the wired LAN PC and see if you notice the same thing...

Then change the WiFi settings from default to Single mode N, WPA2 and AES only on channel 13, disable HT 20/40Mhz co-existence if you have this feature under Advanced/Adv Wireless, using the same configuration as above...

[mikkimus]

Wait, has FW 1.05 been released officially? Can't seem to find it on D-Link.

[FurryNutz]

Not that I'm aware of...v1.04 is latest for your region and mine...

[zenomicon]

What ISP Modem Mfr. and model # do you have?

Can you connect a wired LAN PC to the router and put some source files, 500Mb to 4Gb in size, on this PC and share out the folder. Then connect your wireless test PC to the router and do some Read and Write operations to the wired LAN PC and see if you notice the same thing...

Then change the WiFi settings from default to Single mode N, WPA2 and AES only on channel 13, disable HT 20/40Mhz co-existence if you have this feature under Advanced/Adv Wireless, using the same configuration as above...

i will perform this test as soon as possible

I would like to mention i do not have an ISP modem since i live in a flat. Where I am, only people who live in houses have modems and those who live in flats have a direct cable from a box which is located in the block staircase.

[zenomicon]

Wait, has FW 1.05 been released officially? Can't seem to find it on D-Link.

You can find firmware 1.05 on the german website of dlink.com here : http://www.dlink.com/de/de/support/product/dir-636l-cloud-gigabit-router-n300

[FurryNutz]

I'll put this on the forum for the German link. Thank you.

Seems to be v1.04 with the German Language page loaded is all. I don't see any other information on this version. 

[mikkimus]

You can find firmware 1.05 on the german website of dlink.com here : http://www.dlink.com/de/de/support/product/dir-636l-cloud-gigabit-router-n300

Thanks bud. Does it include english? I don't sprechen deutch  
FurryNutz, is it the same deal I have? The date of firmwares is the same.

[FurryNutz]

Ya I think it's just v1.04 loaded with German LP. You could remove the LP after it's installed and test.

I don't think there is any other changes other then the LP. 

http://forums.dlink.com/index.php?topic=60325.0

[zenomicon]

Thanks bud. Does it include english? I don't sprechen deutch 
FurryNutz, is it the same deal I have? The date of firmwares is the same.

Firmware language (BIN file) is english. It does come with another file which is the german language pack and it's purely optional.

FW 1.04 might be the same as FW 1.05 since i get exactly the same poor results on WiFi, but we can't be 100% sure even if the release date is a match.

[FurryNutz]

Ok, I found more info on the release notes...

[zenomicon]

Ok, I found more info on the release notes...

The complete changelog can be found in the download archive.