Dude, relax. Settle down, breathe.
First things first. Download the updater application.
Then open the application with WinRar or WinZip and extract everything to a folder.
Then find the file prs505/eBookUpdater/assets/updaterAssets/PRSVersion.dat
Richt click it. Choose 'Open'. When asked, choose Notepad.
Edit the number, so 110018040 reads 110018041
Then close Notepad and choose to save.
Then start the flash application, PRS505Updater.exe, should work no problemo.
When having further troubles, post screenshots and photo's, so we can help you properly.