I did update my "Chinese" router to INT firmware 3.0.22 without reset and it works ok 
6 Likes
via webUI?
any differences between versions?
yes
no as i can see
1 Like
Does the bdata based ssh/ telnet access remain (I'd assume so, just to be sure)?
I'm not quite enough understand what you are talking about.
I was able to get syslog on 3.0.22
{"path":"192.168.55.1/backup/log/2020-10-28--23:35:39.tar.gz","code":0}
This Xiaomi ax3600 ssh guide claims to add presistent telnet/ ssh/ uart access to the device, by changing the nvram defaults hardcoded in the bdata partition. This procedure has been confirmed by multiple users for the chinese firmware, given the way it is implemented I'd assume it would also work on the international variant, but obviously that's not guaranteed (but given that it seems to be possible to change between both variants at will, this shouldn't be that much of an issue).
Sorry but I did not do it.
Though I did downgrade to 1.0.17 a few days ago and got ssh access but I lost it after upgrade back to 1.0.67.
And today I just upgraded to 3.0.22.
1 Like
This is not fully true...
SSH with the dropbear service get only enabled if ssh_en=1 is set in the bootloader environment and if the firmware is not a release.
In your linked guide, it's described how to change /etc/init.d/dropbear to also start the service on release builds. But this file doesn't persist on a update!
If I understand it correctly, and reading from the extracted init scripts (I have not bought the ax3600 yet), telnet access will remain active on release builds (with the serial number derived password), from which you can modify the ssh initscript after each upgrade.
Just tested upgrade from 1.0.67 with ssh and bdata change to 3.0.22. I have been greeted with Chinese interface but now there is an option to change language and region (later not really). ssh is gone but telnet access stays so it's like upgrade within the same language version.
2 Likes
Does the INT firmware version lower power of the wifi radio?
Don't have previous values
global
country 00: DFS-UNSET
(2402 - 2472 @ 40), (N/A, 20), (N/A)
(2457 - 2482 @ 20), (N/A, 20), (N/A), AUTO-BW, PASSIVE-SCAN
(2474 - 2494 @ 20), (N/A, 20), (N/A), NO-OFDM, PASSIVE-SCAN
(5170 - 5250 @ 80), (N/A, 20), (N/A), AUTO-BW, PASSIVE-SCAN
(5250 - 5330 @ 80), (N/A, 20), (0 ms), DFS, AUTO-BW, PASSIVE-SCAN
(5490 - 5730 @ 160), (N/A, 20), (0 ms), DFS, PASSIVE-SCAN
(5735 - 5835 @ 80), (N/A, 20), (N/A), PASSIVE-SCAN
(57240 - 63720 @ 2160), (N/A, 0), (N/A)
- 30 dBm (1000 mW)
- 5.320 GHz (Channel 64)
- 2.462 GHz (Channel 11)
after downgrade to 1.0.67 WiFi capabilities stay the same:
global
country 00: DFS-UNSET
(2402 - 2472 @ 40), (N/A, 20), (N/A)
(2457 - 2482 @ 20), (N/A, 20), (N/A), AUTO-BW, PASSIVE-SCAN
(2474 - 2494 @ 20), (N/A, 20), (N/A), NO-OFDM, PASSIVE-SCAN
(5170 - 5250 @ 80), (N/A, 20), (N/A), AUTO-BW, PASSIVE-SCAN
(5250 - 5330 @ 80), (N/A, 20), (0 ms), DFS, AUTO-BW, PASSIVE-SCAN
(5490 - 5730 @ 160), (N/A, 20), (0 ms), DFS, PASSIVE-SCAN
(5735 - 5835 @ 80), (N/A, 20), (N/A), PASSIVE-SCAN
(57240 - 63720 @ 2160), (N/A, 0), (N/A)
1 Like
I am curious if the global version of the router has any differences in wifi amplifiers resulting from the law of the European Union.
The reg domain 00 should be the most restrictive one as it's the world reg domain that should comply with all local reg domains.
In terms of output power limitation, the reg domain US should allow 1000 mW (30 db) on 2.4 channel 1 - 11.
So if you wanna test some limits, you should test with other reg domains set.
Also you should compare the outputs of the commands:
iw reg get
iw list
To get the real output power instead of the limitations of the reg domain only.
does wifi ax use wider band and have more restriction?
Compared to ac wifi not. Maximum channel width is also 160 MHz. The higher throughput comes from better modulations and MU-MIMO.
so 2.4 max is still 40mhz
Yes, you're right. 2.4 GHz band maxes out by near one gigabit theoretical throughput on ax wifi.