What’s new in 5.23 (2013-Jan-29 14:07):
*) lcd - changed gamma, which gives greater contrast
*) fix reboot when running on third party hypervisors;
*) ppp client - fixed possible loss of configuration after reboot for some modems;
*) fixed wifi led order on “SXT Lite5”;
*) wireless - improved nv2;
Do we need to have 5.23 on Ap and client to see the the improvments on nv2 or is sufficient about the ap only.
regards
Ros
Hope wireless nv2 lockup problem is sort out
You need to install v5.23 on both: AP and Clients in order to improve the Nv2 stability.
I got a 5.23 from support about 2 weeks ago, and have seen 5.23rc1 on the forum. Is this the final 5.23?
It would be less confusing if you released 5.24, but I guess that the numbers are running out 
Final. If someone from MT team publishes info about new version – it’s final.
is there only nv2 stability improove or maybe some more like tcp better throughput ?
currently there is nv2 stability improvements but they might increase the throughput as well.
there is also new firmware version:
current-firmware: 3.0
upgrade-firmware: 3.02
how can we benefit the adaptive-noise-immunity from V5.23???
There is a problem after upgrade to 5.23
Today I upgrade my 750G Router from 5.12 to 5.23
after reboot every thing was good , but when i try move my router to another place and turn off it , after power on router display the default configuration window … 
and after that every time my router power up I see this windows and all of my configuration was lost
I try downgrade to 5.12 that before it work about 3 month , but the router again show routerOS default configuration .
I try to install the 5.22 with netinstall and not happened. 
Any Idea, how I can get this fixed?
Thanks
iman230, make sure reset jumper hole (http://wiki.mikrotik.com/wiki/Manual:Password_reset) is clean and both sides are not connected with metallic object. It can make configuration reset on every reboot.
I made this upgrade to my 2011UAS-2HnD couple hours ago and everything went well and looked fine after upgrade, but now I noticed that all my Wireless Security Profiles (2 with different options) had disappeared and my both wlans were totally unsecured.. Yesterday they were there (I know this 100% sure because I joined new device to wlan and it asked password), so I’m pretty sure that the upgrade caused this.
This is not good thing at all, has anyone else experienced same?
I have the same model. My experience with it something like 3 or 4 weeks. After buying it, upgraded till to v6. I have something like 40 clients through PPPoE, local network, of course both NATed to ISP, one PPTP tunnel, and FTP server through USB port, and about 8 firewall rules… Working perfect for me.
Remarks and inconvenience: 3G USB Router starting only after unplugging and plugging 220…USB storages needs to be formated in to a its own file system, which is not realy usable thing…and the USB drives like USB esternal H.D.D. with USB power, doesn’t have enough power to start (intend to change the power supply to the more powerful tomorrow).
By the way all of my settings I did under v5.21, after that upgraded till to v6. Nothing lost. Anyway I did a backup before upgrade, suggest to do this all the time then you decide to do something to you ROS
I had backup too, but I just didn’t noticed that one thing after upgrade.. And this problem was very easy to fix anyway. I just don’t like the idea that my home network was totally open several hours.. and it was only lucky coincidence that I noticed it so fast. I started to wonder why my laptop shows my wlan-ssid twice. Quite quickly I figured the reason.. another AP (OpenWRT) was ok and using PSK as it should, but another one (Mikrotik) was totally open. It caused (luckily) that the same ssid was recognized to two different wlan networks.
It would be smart choise for Mikrotik-people to develop some kind of safety mechanism for situations like this. I don’t care if my wlan doesn’t work immediately after upgrade, but I don’t want to compromise my security! It’s much better that the wlan (and other services too) simply stops working when something security critical like this happens, at least it takes the admins caution immediately.
I have been using this device couple months and this was my first real problem, if we exclude metarouters out of scope.
Btw, is it possible that I have done some mistake with profiles earlier and they just somehow activated now when I made the upgrade and of course was forced to reboot the device? I guess that my devices uptime was something like 60d’s this morning (I’m pretty sure that it was rebooted previous time when I made upgrade to ROS 5.22 at end of November), so there is certainly been some changes to wlan config also after that..
2 weeks ago i received from support developer version of ROS 5.23. i want to upgrade to stable now. if there will be no problem with upgrade to same version?
developer and stable versions have different sizes in bytes, stable is bigger.
Is your first version something like 5.23rc1 or just 5.23?
Your first version is older. Older build time. Upgrade to final 5.23
http://www.mikrotik.com/download
For all us testing v6, when will the nv2 changes of 5.23 be merged into v6?
becs , Thanks for your reply , I checked the jumper hole and reset SW with tester and it wasn’t short or any electrical connection between