PSP "Chronoswitch Downgrader" v5 Released

Submitted by greg; August 31, 2011

Davee lays it all out... Detailed at his blog, lolhax, you'll find his method to downgrading any PSP to 6.20 ... even PSP-3000 09g models, which, before today, weren't able to flash lower than firmware 6.30. Turns out there isn't much difference between a PSP-3000 04g and 09g ... and after discovering those differences Davee has patched up his downgrader, releasing Chronoswitch Downgrader version 5. You can read the technical details following the source. Use Chronoswitch Downgrader on any PSP running firmware 6.35 or later, up to and including 6.60, to downgrade back to 6.20. And best of all, with this newly gained knowledge, 09g'ers will soon join the realm of perma-patched CFWs. Davee mentions however ... this is still considered experimental -- and one PSP was bricked during the testing phase (props to Gamefreeak100 for the sacrifice). So with that said we, and Davee, are not responsible if you render your PSP a brick. But for the record: "[Davee] identified the problem, fixed it and handed it to another brave tester. This time, it worked! 09g was running firmware 6.20 and for the last 12-ish hours it has been running fine. It retains the ability to update to >= 6.30 and seems very stable! Download: Chronoswitch Downgrader v5 - source: lolhax

Tags: 09g, 6.20, Davee, Downgrader, PSP Downgrade, PSP Firmware, PSP-3000

ok after i brcked my psp 3004 05g i got it replaced from sony and it was running on 6.20 perma but they gave me a 09g although i used 6.35 pro-b9 now and it is stable too but still u no ther's a craze for 6.20 tn and 1 more reason is that
my 1 game (of course backed up from original) named bokudake no kajitsu didn't worked with it so i'll try 6.20 tn
& yes thnx davee for this ausumn work

# Scott Baker 2011-09-01 11:01

So this lets me downgrade to 6.20, I have a 9g model so I still have to wait for a perma patch, right? Also I am fine rocking 6.39 pro B8 and LCFW ME something. Why is the perma patch so important? All I have to do is wait 10 seconds when my system recoverys.

# Jonathan Paril Barkley 2011-09-01 11:32

It's not, and I completely agree. I've been using 6.39 for a long time (willingly upgraded due to support issues with 6.20, actually). Pro B8 FTW.

# Christopher Knueppel 2011-09-01 11:48

...

# Scott Baker 2011-09-01 12:16

Cool. I am gonna stay with what I got. I like being able to go back and forth between the OFW and the 2 CFW's, Pro-B8 and LME-8. If anything I was thinking of updating the pro loader to the 6.39 9B. Plus my Pops loader is already set up with all the PRX files. I thought about going up to 6.60 but decided against it when I heard the Signed games dont work on that version

# Martin Sanles Santos 2011-09-01 16:30

great news! i wonder what happen if you use it with a 07g? anyone had tryed it?

# Arnold Tan 2011-09-02 05:01

how you do it, I got black screen (6.35)

# Loyd Manalata 2011-09-02 06:36

it is sure?

# chuayw 2011-09-02 08:28

mine 07g. will it work? or only for 09g?

# Lemson 2011-09-03 22:21

Will This Work On 03g PSP 3001 ??

# Sebodoamat 2011-09-04 09:25

Checking firmware... OK
Your PSP reports model 09g.
Will attempt to Downgrade : 6.39 -> 6.20
X to continue, R to exit.

then i press X

By running this aplication.................................

Press X to start SCE updater. Press R to exit

then i press X, n......

The update cannot be started.
The data is corrupted.
(IDXFFFFFFFF)

so?

# Revanth Balu 2011-09-07 06:22

are you downgrading with 6.60 running? For many of them it worked with 6.60 only!!

# Arnold Tan 2011-09-11 04:21

I also had the same problem, so I upgrade to 6.60 but got the same error. And I downgrade to 6.39 again

# Revanth Balu 2011-09-14 07:26

Someone tell if I can downgrade 6.39 to 6.20 on 09g model?
My psp is new and when I unpacked my psp,it is 6.39 installed..it is 09g. can I use this to downgrade? and did it work for anyone? Please answer :)

# L 2011-09-17 09:56

i downgraded but i want to upgrade to 6.35 again but it keeps saying data corrupted... why is that?

# Erold Versoza 2011-09-19 07:05

it works only with black psp 3k 9g

# firekid654 2011-10-29 12:08

this comment are for the people who want to update from use of chrono SD

Frostgater has released a updater for the people who downgraded and is stuck on what ever OFW "6.xx"

link here u go

# Zirosus 2011-11-21 14:42

I have that same problem.

My guess is, the PSP you have brought 6.39 as its default Firmware.

The PSP 3000 0.9g's the people here were able to downgrade brought with a default firmware of 6.35. That's why it works for them.

However our PSP's are the 3000 0.9g with the default firmware of 6.39. Very different. We can't downgrade lower then 6.39 which means the only thing we can downgrade from is 6.60 back to 6.39.

Many people don't realize this. There are knew PSP 3000 0.9g's that need a new downgrade system. This one will never work for it. I think the creator of this downgrade should be wary of this.

# Guest 2011-11-21 22:25

thx davee bro...succeed!!!! ..but its showing my mb as 4g??????????????? mine is 9g....any hints???

# dr.y 2011-12-04 11:35

hi im new to this and i have a psp 3000 with the 6.60 firmware from sony and everything ive tried the message always says "corrupt file" and "game cannot be started" it wont downgrade for anything thank you for the help

# philipmoore95 2011-12-07 17:13

I tried this on my white psp go and i was shocked but it worked when i downgraded from 6.60 PRO-B10 to 6.20 psp go offical update and well this is the downgrade software that i would recommend for all people who have a psp go running on update 6.60

# coltsfan 2012-01-03 20:18

i have a god of war ghost of sparta edition (black and red) one and was curious if and how it can be hacked thanks

# Guest 2012-03-16 17:52

it dosent work with my 3001 09g model is there another software

# james.hughes94 2012-07-04 06:54

i cant get it to work, i have black psp go at 6.60, im not an expert at psp hacking, i want cfw so i cn record gameplay

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PSP "Chronoswitch Downgrader" v5 Released

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