I tried this app a few times and it’s work perfectly and quickly, but still I'm not responsible for the damage if will cause to your phone :-)

Tweaks Menu:

A. Speed Up Transitions MODs (Refresh needed) – You have a three different options (this have automatic refresh):

1. Full Speed Up Transition MOD - include landscape mod for Home & Lockscreen.
2. Speed Up Transitions with ONLY landscape Homescreen.
3. Only Speed Up Transitions - without landscape mod for Home & Lockscreen.


B. Landscape MODs (Refresh needed) - You have a four different options (this have automatic refresh):

1. Full Landscape MOD (Home & Lockscreen)
2. Full Landscape MOD (Home & Lockscreen) from your orig. files.
3. Only Homescreen Landscape MOD.
4. Only Homescreen Landscape MOD from your orig. files.


C. Activate Fullscreen image for Lockscreen – it’s activate a big-fullscreen image for LockScreen Landscape MOD, but before you apply this, you need to do something.. (thanks to jflatt)

Explanation:
1. Create picture named “mywall”with an 854x854 px dimension and with .png extension (mywall.png).
2. Put this image from your PC to: /home/user/MyDocs/.wallpapers/
3. Go to Setting ->Wallpaper-> choice your wallpaper and press Done.
4. Open N9 QTweak app (password of devel-su, default: rootme), choice i [hit Enter] then choice c [hit Enter]. No need to reboot !!!

D. Install Hebrew Virtual Keyboard – Add Hebrew virtual keyboard (Thanks to mohammad7410).

G. Change GPS provider (Nokia/Google) - This will give you ability to change the GPS provider (Thanks to Almehdin’s script).

H. Enable ROOT-SSH Access (Reboot needed!) – activate SSH access for ROOT user. This have automatic reboot. (Thanks to F2thaK & Almehdin).

I. Add/Remove additional IM (Reboot needed!) - This will install 3 additional packages: im-providers-additional telepathy-haze libpurple0. And you can use additional IM's - ICQ/MSN/Yahoo/AOL/Jabber/VK… This have automatic reboot for both options: Add/Remove (Thanks to Niwakame and his packages).

J. Remove/Restore not necessary icons - You can Remove or Restore the not necessary icons from your homescreen. It's not uninstall, it's only remove icons like facebook, twiter, User guide... You can choose a few numbers separated by one space and press ENTER. (ex: 2 4 6 ... Enter)

L. Change Outgoing & Incoming Calls icons – This will change you Outgoing & Incoming Calls history icons. Reboot needed! (Thanks to superjunior)

M. Feed & Notification header/title colors - This will change your Feed & Notification header and title colors to Orange and Blue (Thanks to oSCho)

Y. Customize the statusbar clock – Change your statusbar clock (ex. 08:08 | Sun 13 Okt or 08:08 AM | Sun 13 Okt), it have automatic refresh.

K. Create Backup !!! – Creating Backup from your system files. This will create folder named “.N9QTweakBackup” in your: /home/user/MyDocs

U. Restore Transition – Restore all changed files of Speed Up Transition with your BackUp files. (Refresh needed).

R. Reboot – Reboot your phone.

Z. Full Restore – This will restore ALL your tweaks, can uninstall new IM’s and restart or refresh your phone. Uninstall have two options Yes & No and also you will notice twice about uninstall new IM’s, you can choose Yes or No inside the restore process.

O. Refresh – Refresh your Homescreen and Lockscreen without reboot. All your applications will be closed anyway, but it's still faster way than a full reboot. See here.

V. About & Credits - it is clear

Before installation, make sure you have "allow other sources" set in settings and developer-mode activated.

Installation:
* Download and transfer the .deb file (thanks to Ammyt & hxka) to your phone.
* Install the .deb file by the usual way (double tap on file).
* Go to application Homescreen. You will see a new icon (Thanks to 3llipsis) at the end of the list and you can see the PDF instruction inside the: /home/user/MyDocs/Documents
* Tap on it and it will ask you for password of devel-su (default: rootme)
* Choose letter you want and press enter (you can write big or small character).

NOTE:
* Run “Create Backup !!!” on your first use of this script, mainly because of Speed Up Transition and Landscape MOD.
* You can choose more of one tweaks separated by one space and press ENTER. (ex: A B D E ... Enter)
* If you choose O or R, choose it at the end
* A and B have automatic refresh and H and I have automatic reboot and if you want to use more tweaks in the same session, just put this letters at the end. Don't use A , B , H and I together.. For example, you want to install A , C , F and D - just put the A at the end: C F D A [hit Enter]

Uninstall:
* To uninstall my application, do this by usual way, go to: Settings -> Applications -> Manage applications. Choose N9-QTweak and uninstall it. Another way – long press on N9 QTweak icon on the app homescreen.

• If you uninstall this app it will leave the Backup files in MyDocs (/home/user/MyDocs/.N9QTweakBackup) and if for some reason you forgotten to restore your tweaks before uninstalling, you can do this manually or only one time by running the one simple command as ROOT: sh /home/user/MyDocs/.N9QTweakBackup/RESTORE . This command:
  
  
  1. restore your tweaks to default (except the new IM’s)
  2. Delete this folder (.N9QTweakBackup) from your phone
  3. Refresh your home and lockscreens
• To update to new version, just install new .deb file.

Enjoy :D

Discussion and bug reports:

Maemo.org