Is there a way to downgrade from 2.6

[jshockey100]

I was stupid and I bought my PSP when it came out (so i had 1.0) and I upgraded it so I am pretty much screwed for most emulaters unless I can downgrade. Plz Help!

[rogermcghee16]

sorry, but unfortunely,(ithink i spelled that wrong) there is no current way to downgrade 2.6 I had 2.6, so i understand, but i traded with my girlfriend for her 2.0, and downgraded it try to trade with one of your friends for a 2.0 or lower.

[skeldwar]

Hey everyone. I found this really helpful guide on a forum. From all that I can tell it is accurate. If you want to know what firmware is on a PSP, ask the sales associate in the store, i.e. Best Buy or Circuit City to show you the box to the PSP. On the side of the box where all of the bar codes and serial # is displayed, look on the TOP RIGHT of the barcode sticker. It will show the model # of the PSP. Right below that you will see 120V. Below the 120V there will be a letter. Based on what letter is displayed, you can determine what Firmware version the PSP comes preinstalled with.

Here is the guide:

Here are known codes:

[Last updated on Jan 25, 2006]

no letter = 1.5 (North-American release) confirmed
A = 1.5 confirmed
B = 1.51 confirmed
C = 1.52 confirmed
D = 1.52 confirmed
E = 1.52 confirmed
F = 2.0 confirmed
G = 2.01 confirmed
H = 2.50 confirmed

My box says:

PSP-1001 K
120V
( )
**NOTE** There is no letter under 120V which indicates that this was from the initial North American release. This is true because I was in line at Best Buy the morning of March 23rd 2005 to be one of the first to get a PSP in the states.

Basically, if the PSP shows letter A, B, C, D, E, or F, you struck gold. I want a 2nd PSP and will be scouring all of the retailers to bug them to show me the box's.

Let me know if this guide is helpful or if you used it to find a 1.50-2.0 PSP. Also if you list what store you found it in might be helpful. Good Luck!