First, i am not a English speaker, so I am answering u this question.
-to unbrick, means to recover a brick psp?
-I am not yet in this problem, but if I get my psp bricked, how can I solve this problem? just downgrade to 1.5 via pandora's battery?( I am running now cfw 3.71 m33-4)
-A bricked psp wont turn on, or it turns on, but the power lights green and the screen is still black?
-If i get full brick i must have a spare psp, running on custom firmware, to run the programs?
2- If you face it, yes you can use the Pandora battery either V1 which is version 1.50 or V3 which will recover to 3.71m33-2
www.dark-alex.org
3- It will turn on, the green light but as you said screen will be black
4- You can have a spare one OR create an extra pandora and have an extra memory stick already creaed, I have 2 extra sticks, 1 V1 and 1 V3 and an extra pandora battery!
Thanks a lot.Now i undestand. So, i just place the magic MS in the PSP
and the jigkick battery to it, and the menu will appear as it normal appears letting me to downgrade/install 3.71 m33-2? Another, question, the psp can brick or semi-brick only if is running a custom firmware, am i right? Another question, if my psp semi-bricks, what am i supposed to do/ Format flash1 and reset settings? Any help appreciated.
Nope, it bricks or semibricks only if you do soemthing to it, like change the Flash0 or 1 or XMB, its not likely that you will damage your PSP just by using Custom Firmware
Now the menu is a black screen where the first option is X to install, so thats it.
If your PSP bricks, its best to have a second pandora battery and a magic stick spared, I have them and an extra one just in case something like that happens and to do the favor to my pals and friends!
Thx, but I already have a spare PSP, running custom firmware, and if any of my psp full bricks, I will have the other psp to make a Magic MS and a Pandora Battery, thanks for all guys.