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August 15, 2014

Android L Preview on Nexus 7

Hi all,

Today I’ve finally loaded the Android L Developer Preview on my Nexus 7 Wi-Fi 32GB

 

Its so simple to load the Android L. Here is the procedure

 

Warning

All the device data will be erased. Please take backup of all your data before doing this upgrade.

Not all the applications will work since it’s just a developer preview OS version

 

Pre-requisites

  • Android SDK with latest update
  • Android L Preview OS image
  • Make sure that, your device has more than 60 to 70 percent of battery
  • Enable USB Debugging
  • Connect the device to computer with USB cable. Make sure that, it has detected by computer

 

If you don’t’ have the pre-requisites, please follow the below procedure

 

Android SDK Installation & Update

  1. Download the Android SDK from this link
  2. https://developer.android.com/sdk/index.html
  3. Open SDK Manager.exe
  4. Install Tools, Android L Preview, Extras
  5. Update latest version if available

 

Android L Preview OS Image Download

  1. Download the corresponding Android L OS image for your device from this below link

 

Installation Process

  1. Extract the downloaded image to a folder
  2. From Android SDK folder, navigate to “platform-tools” folder, copy adb.exe, AdbWinApi.dll, AdbWinUsbApi.dll and fastboot.exe
  3. Paste in the Android L Preview extracted folder
  4. Finally the extracted folder should look like this
    • image
  5. The highlighted files has been copied from SDK->platform-tools folder
  6. Open the command prompt and navigate to OS extracted folder
    • Tip
      • Open the folder in explorer window. Hold “Shift” and right click on mouse
      • Select “Open command Window here” option
  7. Connect the device to computer
  8. Put device into “fastboot” mode by rebooting
    • cmd> adb reboot fastboot
  9. Device gets rebooted to fastboot
  10. If device is locked, then please unlock it
    • cmd> fastboot oem unlock
  11. Now, run the “flush-all” script
    • cmd> flush-all
  12. It takes some time to install the image
  13. After completing the installation process, it asks you to press “enter/return” button to exit
  14. Press enter/return button for confirmation
  15. Device gets restarted, Android L Preview will be displayed on the device
  16. To lock the device, execute following commands
    • cmd> adb reboot fastboot
    • cmd> fastboot oem lock
  17. Like a new device, enter all the details like your Gmail account, Wi-Fi connection etc.
  18. Enjoy the features of Android L Developer Preview OS

 

Please send your feedback and queries to psrdotcom@gmail.com
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August 14, 2014

Finding IP address to MAC and vice versa on same network (subnet) or different subnet which is reachable by ping

Hi all,

After long time I got a chance to write the blog.

 

This time it is related to networking.

 

Finding out which all the system up on the network

Syntax

cmd> nmap –sP < regex IP >

Example

cmd> nmap –sP 192.168.1.*

 

Finding MAC address of a device which is connected in same network

Syntax

cmd> ping <broadcast address>

cmd> arp –a [ <IP address> ]

 

Example

cmd> ping 192.168.1.255

cmd> arp –a –> Gives all the IP address and MAC address in the same subnet network

cmd> arp –a 192.168.1.25 –> Give the MAC of the specified IP address

 

arp –a : Lists all the IP addresses which are recently got into network with its MAC addresses

 

Finding MAC address of a device which is connected in same network but different subnet

Syntax

nbtstat –A <IP address>

Example

nbtstat –A 192.168.2.45

 

Please send your comments and feedback to psrdotcom@gmail.com

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