Category Archives: IT Blog

Cisco has released new firmware 1.0.03 for Linksys E4200

So if you like me have Cisco/Linksys E4200 router and was able to connect using 5GHz over bigger distance to get the maximum performance then quickly go here and get the latest 1.0.03 firmware and upgrade you E4200 router.
I’ve been using this router for couple months(firmware 1.0.02) but I was not able to connect over 5GHz if I was sitting in my office in 1st floor(the router is on the ground floor). It looks like Cisco did something in new 1.0.03 firmware, because as soon as I upgraded to a new firmware version my computer reconnected on 5GHz which means that I can get up to 450Mbps instead of 144Mbps.

Using Cisco UCS Emulator

Cisco Unified Computing System(UCS) is quite new compared to well know server providers like HP, Dell, IBM but during a short period of time it achieved quite a lot.
For anyone who wants to see what UCS is or just simply try out, Cisco has released UCS Emulator.
UCS emulator is pretty powerful tool it allows users to emulate UCS environment. So you can add your chassis, servers, CPUs, RAM, PSUs etc. The other interesting feature is that it allows to import hardware configuration from a live environment. It cannot import everything but is pretty close.
This post will show you how setup and use UCS emulator.
Before you start you’ll need to download UCS emulator also you need to install VMware Player or Workstation on your computer. download 7z file (you’ll need Cisco login to download it, just register). The emulator requires 1GB of RAM dedicated to the VM so make sure you have enough memory. (again you need to login to download)

Extract the files from 7z archive to a new folder.
Install VMware player/Workstation this will require a reboot.
Continue reading Using Cisco UCS Emulator

This blog is not dead…

Hi everyone,
It’s been a while since I posted here and this was mainly because of two reason. First I was on holidays and second I’ve changed my job. So I loads of things going on and simply had not time to look after blog.
This should change in the coming weeks as I will start bloging again. As my job roles has changed the things that I write about will also change, mainly because I’ve moved from Microsoft products to cloud computing. So expect more posts about virtualization.

Windows does not have enough information to verify this certificate.

Here come SSL certificates again. In recent Operating Systems Microsoft made some changes in Root certificates by removing some of them. Probably the best way to illustrate this is try to install Java on Server 2008 R2. When you try to install it you’ll get the following error:
Error 1330. A file that is required cannot be installed because the cabinet file has an invalid digital signature. This may indicate that the cabinet file is corrupt.

Continue reading Windows does not have enough information to verify this certificate.

LED stair lighting based on Arduino, Part 7

I’m closing of this project as I think that with the current configuration I will not be able to achieve what I want.
By closing this project I will kick of a new one(Version 2) which would be a bit more complicated from the hardware and programming point but at least it will give me more freedom. The new version of arduino automatic stairs is already being developed and I will post a new post soon(watch this space). For those of you who are still interested in this project here is a draft code: Continue reading LED stair lighting based on Arduino, Part 7