My samsung mini GT-S5570 was bricked ( I think so) when upgrading to Gingerbread 2.3.6. The Screen is black now and I could not get not into download mode / recovery mode also. I tried to flash other ROMs using Odin downloader which is stuck at set up connection.
I needed to see some website that have Flash, and I found that my LG4X doesn't have flash player installed. I tried to install from Play Store, but it is not listed. I read that the Flash is not supported any more on 4.1 and 4.2 but should be available for older versions like 4.0, 2.3...
Update your flash player for your Linux system to this 10.1 version. The Adobe Flash Player 10.1 includes many fixes and improvements for Linux system. This tutorial will show you how to install the latest Adobe Flash Player 10.1 on Ubuntu Lucid Lynx.