Sometimes a device's screen can be deceiving. black-screen, white-screen, -Phone--/!\--PC. All of these can be a download mode. Sometimes a black screen brick can actually be in a rare S5PC110 development mode where you can use UnBrickable Mod without a hardware modification. ModeDetect for Linux. It will work on any Linux based OS with Java installed.
- Install Linux on your computer. Install Ubuntu if you don't have Linux.
- Ensure you have the latest version of Java.
- Download and run the detector here: http://code.google.com/p/hummingbird...downloads/list.
Simply remove the battery, plug in USB and insert the battery
Try again while holding Vol+ and Vol-
Try using a 301Kohm Jig in the USB slot with the battery inserted then plug in the USB cable.
All you need to do is run it, and plug in your questionable device. If it shows anything besides the image below, then you're not bricked.
If it will only show the image above, then you can apply UnBrickable Mod, or JTAG to your device to recover it.
If it shows this, regardless of what's on your screen, you're in download mode:
If it shows this, regardless of what's on your screen, you can use UnBrickable Mod to recover it.
Currently the supported modes are:
S5PC110 (UnBrickable Mod)
Samsung Kies mode
Media Player mode
Mass Storage device
ADB debug mode
Samsung GMO Modem
I hope this helps someone. Mode Detector is a simple app which looks at the lsusb device IDs and gives a nice GUI front-end for interpenetration of the results. This app should be the last thing you play with before you decide to open it, or send it in for repair.