Automatic Crack:
1. Install [Avast PRO] or [Avast Internet Security] or [Avast Premier] as trail (DEMO)
2. Disable Self-Protection module from Avast.
 You can re-enable it later.
3. Windows XP users please double click [AVAST XP by F!r3 Sp!d3R.reg] to activate my 2050.
4. Windows ⅞ users please double click [Avast License By F!r3 Sp!d3R.exe] to activate my 2050.
4. Run [Avast 2050 by F!r3 Sp!d3R], and reboot.
5. Done
You can enable Avast's autoupdate with 2050.
You can re-enable Avast's Self-Protection module now.
Password: ZeNiX
I Didn't Try on Win 10.
For Manual Crack:
1. Extract > Avast 2050 License Faker by F!r3 Sp!d3R.rar
2.  Open Manual Install
3.  Rename This file (F!re Sp!d3R.dll) to Version.dll (Nothing else)
4. Now Copy and past Version.dll file into this location: (both)
Ctongue.gifrogram FilesAVAST SoftwareAvast
Ctongue.gifrogram FilesAVAST SoftwareAvastSetup
5.  In those folder you will find Userenv.dll  named file, delete this file. If you can't find this file its OK.
6. Done. restart your pc.

I Prefer to Automatic Crack.