No no....what I mean is, first you tftp 41738 into the router (don't reboot yet after you tftp 41738), then upgrade to 57928 directly at 192.168.0.1 page.

You said you are able to view TM firmware configuration page (the 5ghz high channel wifi list) after successful tftp, but it revert back to EU after reboot right? Following the above method ought to work.

Sigh, I just sent email to TP-Link support again asking on how to revert back to Malaysia firmware from EU firmware.

Let see if TP-Link will reply to me. Don't put too much hope.....

Mind to tell us how did you solve it?

Did you disable NAT Acceleration or use QOS functionality?

Or somebody is torrenting/p2p?

About cpu usage, did you enable other service such as USB file sharing and Print Server?

~.~ It is well known fact that C1200 will still random reboot, although not that frequent.
Basically, one can expect random reboot once a week.

It is a pity. C1200 hardware is better than DIR-850L. But unstable firmware is really an issue.

This post has been edited by JohnLai: Feb 28 2018, 12:11 AM

Any high end router that costs more than RM800.

Example : ASUS RT-AC68U ---> Reason = one can flash alternative firmware.....although default firmware is good enough....

-.-...Do you know TP-Link C1200 itself cost about RM350?

And D-Link DIR-850L costs about RM300?

How exactly do you think <RM200 router will perform? Hate to shatter your hope, but hey...it is life....

Thus, I propose you to check your area for 2.4Ghz wifi.
If it is really congested.....as in 10 - 20 wifi hotspots around, you are screwed.

Plus, some leaky microwave oven can totally screwed 2.4Ghz wifi signal.

Even better, try to connect to C1200 2.4ghz and run some speed benchmark. If it can get 30Mbps, RT-N12HP should be fine.

.....Which one is more important for you?

Having option to select more 5ghz wifi channels, but you need to accept TR-069 and @unifi suffix at wifi guest network with TM firmware

Or EU firmware with limited 5ghz wifi channels without TR-069 and annoying @unifi suffix?

Should be fine.

Beware though....currently, if one flashed EU, can't flash back to MY.

TP-Link doesn't respond to my email about how to revert back to MY from EU firmware at all.

1) Did you screw in two antennas properly?

2) Did you adjust the antenna transmit power and force channel 40Mhz? Go to Advanced Settings, Wireless.
Enable Wireless Multicast Forwarding.
Disable Enable WMM ASPD
Disable Enhanced interference management
Set Tx Power adjustment to 200 mW

Don't.
The default wireless options sucks.
I used DSL-N12HP before. (a more or less the same stuff)

After you make the modification, reboot and rebenchmark.

..........Should I explain what those option do?

You need to make those changes if you wanna get 30Mbps..... It doesn't matter about devices being within 3 meters away line of sight distance.

Would be grateful if you post the step on enabling back Malaysia bands on AU firmware after getting root access.

..........still under warranty? Then I suggest you to totally brick it using one of the method posted in lede forum thread and go claim warranty from TM.....
I think you just overwrite the uboot safeloader section with wrong stuff.



That aside, does the DE-->MY setting persist after router reboot?


EDIT:About that 40% issue, which firmware did you try? EU or TM?

EDIT2:I think you forgot to cut off the first 0x20200 from TM firmware before mtd write.

TM firmware has boot partition
Eu firmware doesn't have boot partition
Can you still ssh to the router? If can, try to cut off the boot partition and mtd write again. But since you already wrote the firmware into the router...well.......

This post has been edited by JohnLai: Mar 11 2018, 01:38 PM

About that editing /etc/config/wireless, was you doing it via VIM or UCI? Do you reload the wifi interface after applying change?

Well, I used UCI to do so. Channel is successfully changed to 165. (verified via Wifi Analyser).
Unfortunately, the setting doesn't persist after reboot.

Reason being the /etc is mounted as ramfs type file system.





EDIT:

SUCCESS!!!!!!!!!
SETTING PERSISTED!!




Ignore the CPU usage, I am torrenting a lot of stuff.



EDIT2: Edited the image to remove private info....

This post has been edited by JohnLai: Mar 12 2018, 12:15 AM

Alamak, how am I suppose to explain step-by-step? Using vim alone through Esc, i (case sensitive), ZZ (case sensitive) to save temporary stuff at 10-usb is troublesome enough.

I don't use beta firmware....beside, to remove the background, I think one must delete/replace index.1516775402233.html background? It is possible to modify the Beta background wallpaper. However, the setting will not persist after reboot.

Follow the guide at https://forum.lede-project.org/t/build-for-...-ac1200/2547/47

Officially, there are three bands :
1)U-NII-1 = 36-50
2)U-NII-2A = 50-64 U-NII-2C = 100-144
3)U-NII-3 = 149-165

We all know U-NII-1 is universally available.

TM firmware is using BS country code with extra parameter "no_autodetect": true which results in channel 36, 40, 44, 48, 100, 120, 161 and 165
However, simply forcing BS code without this extra parameter results in channel 36, 40, 44, 48.
I guess one must write extra parameter into config.bin for the firmware to display additional higher channel. I assume "no_autodetect": true actually disable DFS.

No idea how this parameter should be written into config.bin
To be certain, I need config.bin with channel 100 from TM router. Anyone with TM latest firmware can donate a config.bin for me to check?


Forcing MY country code will result in channel 36, 38, 40, 44, 48, 149, 153, 157 and 161.

Here is a funny stuff, if one forces TW code, one will have access to U-NII-2A channel (auto default to channel 56), with the side effect 2.4ghz wifi stops working . From what I can see, TW code will force DFS to be enabled regardless of the extra "no_autodetect": true parameter Something about 5ghz DFS causes 2.4ghz wifi to stop working.
The same 2.4ghzs issue also happens with SG country code.


EDIT:
Weird, I am expecting higher channel with higher transmit power should produce better signalquality . But the result kinda...strange:
36 = -44dBm
161 = -52dBm
(The closer to 0dBm, the better the signal)
As if the higher channel still transmit at same power as lower channel.


EDIT:
Would be grateful if someone help me to test these countries code:
DZ
AL
BH
KW
AZ
EG
UA
IN
SV
CO
CR
PE
AR
MX
CA
KR
JP

The above is the one I haven't test yet. It took me too long to test, I already tested 80+ country codes.
Some country code broadcast at higher power.
Just write out 5ghz range for each of the country code above.

edit:
after searching high and low for BCM47189 documentation......it appears C1200 V1 EU doesn't support DFS. This confirms my suspicion about TM Bahamas region code with additional parameter.......

This post has been edited by JohnLai: Mar 12 2018, 04:14 PM