Worrajak's blog

After updating your Motorola Atrix 4G to software version 4.5.141 you will lose root access. For those of you want to root your Motorola Atrix 4G after updating to build 4.5.141 this is how you do it. Keep in mind that when typing in the commands during the rooting process you will leave out the quotes. Instructions to root Atrix 4G running Gingerbread on 4.5.141: Download and Extract Fastboot Files (I was unable to post the Link, but you can go to "android-advice" website to find it) Connect your phone to the computer via USB Put your phone in fastboot mode (restart phone holding volume down button) Open a command prompt and navigate to C:/moto-fastboot-win32  type “moto-fastboot.exe flash preinstall preinstall.img” press enter Press “Vol Up” to initiate fastboot protocol  type “moto-fastboot.exe reboot” press enter Your phone should reboot, wait for it to come back up type “adb shell” press enter (to restart the shell) type “/preinstall/dosu” press enter If s...

[How To] Motorola Atrix Hard Reset To perform an External Manual Reset of your handset to restore to factory settings, read instructions below and then perform. 1.Power off the phone, press and hold volume down button, press power button. 2.Screen will come up with "Fastboot", press Vol down key to cycle through choices until you get "Android Recovery", press Vol up key 3.Wait for the "triangle ! / Android" screen then release the volume down button *4.Tap on bottom right corner of the screen (may take a few times). a menu will come up 5.Tap on "wipe data/factory reset", and press OK. Another Confirmation screen will come. Press Yes and OK 6.After userdata is cleared, the "reboot system now" option will be highlighted by Default. Press OK. 7.Phone will reboot to initial setup MOTOBLUR screen. Edit (das8nt): *If on Android 2.3.4/2.3.6 then replace step #4 with pressing both Volume buttons at the same time. Also, use the Power button to a...

Buy from : AliExpress This is a basic how to on Flashing the firmware. (Use this at your own risk!) There are 2 methods to flash the firmware. Micro SD update or flashing through a program in windows. #1-Micro SD Method Updating your system through micro sd does NOT update the kernel. It only updates boot, recovery and system. Steps: 1) Copy update.img to the root of your micro sd card. If you don't have a micro sd card you can also copy to the internal /sdcard directory. 2) Either insert your micro sd card, unmount and mount micro sd or sdcard, or reboot. 3) The system will ask you if you'd like to update. Choose yes. It will then reboot into recovery and update your system. 4) When the process is finished the system will reboot and ask you if you'd like to delete update.img. Say yes otherwise it may try it again. #2-Flashing through Rockchip Batch Tools v1.5 in Windows 1) Download Rockchip Batch Tools v1.5 and extract to a folder. Rockchip_Ba...

ref Link:  http://www.diyaudio.com/forums/diyaudio-com-articles/214808-amp-camp-amp-1-a.html The Design As mentioned before, we want a simple, good sounding design. For the past twenty years or so I've been writing up  single stage “Zen” amplifiers and other simple designs , and we are going to channel some of those to get what we want. Here is the very simplified circuit: In this circuit we see a single gain element Q1, an N-channel power Mosfet. In the diagram you will see that the three pins on this device are labeled Source, Drain and Gate. The input signal comes to the Mosfet Gate pin, and the output signals appears at the Drain pin. The Source is attached to circuit Ground. This arrangement is known as “Common-Source” operation. Of the three possible ways of operating a Fet gain device, it is the one that offers both voltage and current gain. The other two operating modes are known as Common-Drain and Common-Gate. Common-Drain has the signal input going to the Ga...