Wednesday, June 16, 2010

Take screenshots of mobile screen in Nokia s60v3 phones like N73

It is possible to take screenshots of  the mobile screen of s60 devices and save them as a image.
The screenshots come handy in several situations.One example is that when we want to post the screenshots on the web as part of a tutorial or a review.
There is one open source software available for this.
It can be downloaded here: Screenshot for S60v3 (N73)





Developers can access the source code for this screenshot application here.

Fix "Expired certificate" error in Nokia symbian phones

Sometimes while installing symbian applications, "Expired Certificate" error may occur.


This is because the certicates are issued for certain time periods,and wont work if many years have expired after the application was created.
For solving this error, change the mobile date to some date in 2007.
This solves the "certificate expired" error and the application will install smoothly.
After finishing installation,change the date back to the current date.

Fix Nokia N73 "Not enough memory to perform operation" error

Nokia N73 phone sometimes gives  the error "Not enough memory to perform operations","close some applications and try again".
This error may occur even if the user doesn't store any data on the phone memory.
This is caused by one application called  "LifeBlog".
LifeBlog is an application that tracks everything that goes on inside the N73 mobile.
The reason is one file called "Lifeblog.db".This file's size occupies most of the phone memory and causes this error.
Deleting this file will free up the phone memory and causes the error to disappear and also improve the performance of the mobile.

For deleting this file,special file manager applications are necessary.System files and folders will not be listed within the default file manager.
Install Y-Browser,its a free application.
(Y-Browser may give "Expired Certificate" while installing,follow this simple step to stop that error)
Open the application,Browse  into C:\Data\lifeblog\Database and delete Lifeblog.db


Then restart the phone,the database will be created again,but with very less space and the error will go away.

Saturday, June 12, 2010

Connect two laptops in wireless LAN without using access point

First of all, this works only with laptops using Windows 7.

The procedure listed here provides a method to establish wireless  LAN connectivity between two laptops running Windows 7. This LAN can be used for file sharing /multiplayer games/internet sharing if internet connection is available in one of the systems.
Connectivity between two systems without using access points such as a switch/router is called as "adhoc" connection.
In this setup,one system acts as the access point and the other system connects to the access point.
One thing to be noted is that one laptop can act as an access point,in the mean time be connected to another access point.The advantage is that this laptop can act as a bridge between two networks.

Step 1: First we setup one laptop as access point
Open Control panel->Network and sharing center
Click on "Setup a new connection or network"



Step 2:  Scroll down on the dialog box and Select "Setup a  wireless ad hoc (computer-to-computer) network.Then click "Next".


Step 3: In the next window,provide a name for the network and a security key for the network


Then click "Next",if required click on "enable Internet connection sharing" in the next window.
Click "Close" to finish the setup.

Step 4: Now,for laptop-laptop or system-system connections, the IP address of the systems need to be setup accordingly. For normal LAN settings,we use 192.168.1.x addressing, but for adhoc connections,we have to use 192.168.0.x addressing as shown below.

For setting up the IP address,again goto Control panel->Network and sharing center.
Click on the "Change Adapter Settings" link on the left panel.

Step 5: Right click on your wireless network connection and select "Properties".Default name for the wireless adapter will be "Wireless Network Connection".
Select "Internet Protocol Version 4" and click on the "Configure" button.


Step 6:  Fill the "IP address"and "Subnet mask" fields as below and then click "OK" to save the settings.


Now the access point is setup successfully.

Step 7: Connect the other laptop to the newly setup access point by using the usual procedure.(searching for wifi and connecting).
Then setup the IP address of this laptop to the 192.168.0.x format.



Now both laptops are in LAN.To play multiplayer games, add exceptions in firewall for the game executables or turn of the windows firewall temporarily.
For file sharing,the laptops can be accessed by their IP addresses or through the Network sharing center.
Internet connection sharing works by default.

Friday, June 11, 2010

Remove WGA error message

Remove "You may be a victim of software counterfeiting" error message
Microsoft installs "Windows Genuine Advantage" on user's computers and displays annoying error messages to activate the copy.Its a sort of sneaky behavior to install that update without explicit user approval.

There are many removal tools for removing the WGA error message,but most of them are deemed illegal by microsoft.Here is one tool that does it legally.It just removes the update.Make sure not to download the WGA update again.If accidentally downloaded again, use the tool again.
The tool is available at Softpedia.
Here is a backup link,incase Softpedia link gets changed.