What is the difference between psp 2000 and psp 3000?

Any commercially available pellet will work. Some styles/weights/manufacturers shoot better in a particular gun than others. Impact points vary with aerodynamics/weight.
I experimented with different pellets to get the most accurate one.
Gamo makes a really good pellet.
Here's a pack with different styles -

GAMO Performance Pellets Combo Pack 177 Cal Multiple Styles 632092854 eBay

25 December 1642 [NS: 4 January 1643]
During Newton's lifetime, two calendars were in use in Europe: the Julian ("Old Style") calendar in protestant and Orthodox regions, including Britain; and the Gregorian ("New Style") calendar in Roman Catholic Europe. At Newton's birth, Gregorian dates were ten days ahead of Julian dates: thus his birth is recorded as taking place on 25 December 1642 Old Style, but can be converted to a New Style (modern) date of 4 January 1643. By the time of his death, the difference between the calendars had increased to eleven days: moreover, he died in the period after the start of the New Style year on 1 January, but before that of the Old Style new year on 25 March. His death occurred on 20 March 1726 according to the Old Style calendar, but the year is usually adjusted to 1727. A full conversion to New Style gives the date 31 March 1727.

High chairs usually cost around $20-$100. Very high quality ones can cost $500.

Your thermostat is located inside the rear hose housing, towards the back of the distributor, closer to the firewall.

Your PSP is BRICKED
How it can happen:
1) You turned it off durning an update
2) You tried to hack it and failed
Solutions:
1) If you have a PSP 1000,or a non v3 2000 you can use a pandora battery to unbrick
2)if it is hacked try holding R button
3)Hold Select+start+triangle+sqare this will format flash1 and may help
4)If you have a v3 2000,3000,or a Go try Select+start+triangle+sqare or just send it to SONY

Ok, go to your Game menu and scroll down to the memory stick. Hopefully you should still have the 5.03 GEN B CFW on there, if not just connect your PSP via USB and put the file that contains the firmware your PSP is on at the current time in the PSP/GAME folder. When you have the 5.03 CFW on your memory stick press X to load it but then hold the left hand shoulder button. This will then bring up a menu where you can press different buttons to perform different functions. With GEN B it should be "Select" to uninstall the GEN B CFW. This will then remove it back to ChickHen (which I presume you are using). You should then be able to install the CFW of your choice.

Hope this helps and thanks for using FixYa

hi check out the link for assistance
http://www.gamingbits.com/content/view/4785

look on the top of the psp device there should bea little tab thats wat u pull away from the psp but not will alot of force just a little bit of force

Hello,
        This is due to  "Self diagonastic system" activation which controls further damages. The Lamp needs replacement. Many causes of this error could be;
1- Lamp life is completed (which depends on hours .like 2000,3000, 5000 according to the company)
2- Lamp is damage or broken.
3- Due to short circuit it start malfunctioning.

Therefore, Please contact any nearest authorised service centre or any expert to replace the lamp.
Thanks for using FIXYA!