TheMightyFederer and Dino.tee,
The default password or PIN is "0000", so even if you have the setting for MENU LOCK set to ENABLE rather than DISABLE, this password or PIN should have worked to get past each point, although you would have to re-enter this PIN everytime you went back to access another setup menu. Since it doesn't accept this PW, it isn't behaving as it normally should.
I hate to recommend doing so, but if you cannot make the change that Beavs has stated in his post and all else fails, look at my procedure tutorial for loading new firmware into your AZBox above (stickies at the top of the page) and in there you will find instructions regarding "FORMAT APPLICATION AREA". You might need to do this to restore your AZBox to factory settings all around, but keep in mind that this will mean starting completely over from scratch regarding all else you have done up to this point (unless you were savvy enough to already have created and saved back up files on your PC).
Once you have formatted the application area, there is an option in the SETTINGS menu to perform a FACTORY RESET and you may need to engage that option as well. Try it without first and see what happens, if it is still messed up, then perform the FACTORY RESET.
You will want to use your USB FLASH DRIVE with whichever firmware you desire loaded onto it and inserted into the USB port of the AZBox. The file will require you to rename it as either "Patch" or "Patch.bin" Personally, I would recommend that you copy the firmware file that you are going to use from your PC onto the FLASH DRIVE and rename it "Patch" and then copy the same file over again onto the FLASH DRIVE and rename the second copy as "Patch.bin". Your reciever will ignore one and take the other, it will take whichever one is appropriately labeled.
If you must do this "FORMAT APPLICATION AREA", remember that you will have to reset your resolution settings when you restart / reboot the AZBox afterwards. You may likely have no video displayed as it will default to PAL video and basically its' default European standards (opposed to North American settings).
If this be the case, remember to let it reboot fully once, then reboot again by holding the STB POWER button on the remote down for more than four seconds. When the receiver is in process of rebooting the second time (after you see the CHECKING... displayed), keep pressing the RESOLUTION button on the remote until you see the resolution options begin to be displayed on the VFD display (front panel of the AZBox). Then step though the options:
COMPONENT/COMPOSITE/SCART/HDMI - PAL/NTSC - 480i/480p/720p/1080i/1080p
Press OK when you see the appropriate option or setting displayed on the front panel of the AZBox.
Don't perform this "FORMAT APPLICATION AREA" unless you have exhausted all other avenues first. This is your last resort to restore everything to defaults and it really means starting over from pure scratch.
The reason I am referring you two to this procedure is because my gut instincts tell me that you didn't go into the menus and set up this MENU LOCK option and you also didn't go into the menus and alter your password or PIN on purpose, so it appears that something is corrupt in your firmware and that is creating this issue for you. This means that you will probably need to clean the slate and restart from scratch to avoid further headaches.
I also recommend that you delete the last firmware file that you loaded into the AZBox from your PC's memory and re-download it as a fresh file, in case the last file you utilized was corrupt. There is no way to tell where the problem arose from, so erase all past history and truly start over from scratch to avoid repeating the same problem over again.
I wish you two the very best of luck in resolving your conflicts!
RADAR