Switching between Application

If opposite means that you want to rotate the image or picture for projector mount in the ceiling.

KEYS location: (keys are located back side of the projector there is 2 keys 1 for menu and second is a joystick witch have 4 arrow keys and center press is a enter key)

Press MENU button to display the menu screen.
then use joystick UP and DOWN to select the OPTION menu. Press joystick for ENTER to display the option screen. Then press joystick UP and DOWN to select INSTALLATION.
Then press joystick RIGHT and LEFT to select your required image rotation there is four type of rotations.
1. FRONT DESK
2.FRONT CEILING
3.REAR DESK (A translucent screen is required for rear projection)
4.REAR CEILING (A translucent screen is required for rear projection)

If opposite means negative to positive so there is no any setting in your projector witch is chang your picture or image positive to negative.

Here are the Master Reset codes for your phone.

Master Reset / Codes
Accessing the Service Menu - Move joystick right, press * key, move joystick left twice, press * key, move joystick left, press * key.
Checking Firmware Version - Move joystick right, press * key, move joystick left twice, press * key, move joystick left, press * key, press 1 key twice.
Show IMEI # - press * key, press # key, press 0 key, press 6 key, press # key
Manual brightness adjustment - While in camera mode, press and hold * key and move joystick to lower brightness, press and hold 0 key and move joystick to increase brightness
Quick ScreenSaver - Pressing # and * at the same time
Show screensaver and lock keypad - press * and lock keys
*#0000# - Reset language back to english
Hard Reset -Hold power for 10 seconds

go to - menu-> settings-> application settings->  call->  all calls->  auto reject-> (scroll one down) reject list->
[on the reject list uncheck number you wish to remove from the reject list. ]

-this is the most accurate answer, trust me.

If you are using the RM-PJ2 remote control, following these instructions. You will have 5 seconds to complete the key sequence.

1. Make sure the Projector is in "Standby" mode. There will be a red light instead of green
2. Press the Reset button
3. On the "joystick" type button, toggle the left directional arrow
4. On the "joystick" type button, toggle the right directional arrow
5. Press down on the "joystick" button to press Enter.
6. Your lamp hours should now be reset.

Recap: Reset, left arrow, right arrow, Enter, all within 5 seconds.

Good luck!