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afterdawn.com > forums > consoles > sony psp - mod and firmware discussion > help! cant play iso/cso file after updating to 3.90 ver
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Help! Cant play iso/cso file after updating to 3.90 ver
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ronnnzzz
Suspended due to non-functional email address
_ 		20. February 2008 @ 15:01 _ Link to this message    Send private message to this user   
hi
i am using psp 3.71 version of firmware then i went to upgrade it to 3.90.... Now i cant play cant play iso/cso file with the new ver. Is there is any method that i can "downgrade" back to my previous ver.. I try to restore to default setting but the 3.90 ver is "still here".. I just bought my PSP slim last week, and I am very new to this yet.. hope someone can help me... thanks alot..
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Dr1ver
Senior Member
_ 		20. February 2008 @ 15:04 _ Link to this message    Send private message to this user   
this is 3.90m33
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07anto07
AfterDawn Addict
_ 		20. February 2008 @ 15:05 _ Link to this message    Send private message to this user   
Originally posted by ronnnzzz:
 hi
i am using psp 3.71 version of firmware then i went to upgrade it to 3.90.... Now i cant play cant play iso/cso file with the new ver. Is there is any method that i can "downgrade" back to my previous ver.. I try to restore to default setting but the 3.90 ver is "still here".. I just bought my PSP slim last week, and I am very new to this yet.. hope someone can help me... thanks alot..
if this is official firmware u will need a pandora battery and card.

if it is 3.90m33 do this boot into recovery by holding the L button a menu will apear scroll to config then scroll down to umd mode press X till m33 driver no umd comes up then press back then exit now try ur games they should work.
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250gb ps3 non modded and 60gb launch model 3.55cfw

This message has been edited since posting. Last time this message was edited on 20. February 2008 @ 15:12
ronnnzzz
Suspended due to non-functional email address
_ 		20. February 2008 @ 15:31 _ Link to this message    Send private message to this user   
Thanks for replying.. But I still cant solve the problem, nothing happen when i hold on the L button when switching on the power.
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Dr1ver
Senior Member
_ 		20. February 2008 @ 15:36 _ Link to this message    Send private message to this user   
your using the official 3.90 fw and not 3.90m33
to check this got to system setting and then sytem information it should say 3.90 or 3.90m33
you said you where on 3.71 and now you updated to 3.90 you cant play games; does this mean that you had 3.71m33 and where able to play iso's on it?

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DERP DERP
07anto07
AfterDawn Addict
_ 		20. February 2008 @ 15:41 _ Link to this message    Send private message to this user   
Originally posted by ronnnzzz:
 Thanks for replying.. But I still cant solve the problem, nothing happen when i hold on the L button when switching on the power.
this is official firmware u will need a pandora battery and card
[ + quote]


250gb ps3 non modded and 60gb launch model 3.55cfw
ronnnzzz
Suspended due to non-functional email address
_ 		22. February 2008 @ 15:53 _ Link to this message    Send private message to this user   
thanks 07anto07 and dr1ver

yes,my previous firmware is 3.71 m33 ver , the 3.90 ver is dl from uk/playstation.com. the problem is solved already. my fren had help me to bring to Sim Lim Sq (spore) to reinstall back the 3.71 m33-2 ver.
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nixz
Member
_ 		22. February 2008 @ 16:08 _ Link to this message    Send private message to this user   
Originally posted by ronnnzzz:
 Thanks for replying.. But I still cant solve the problem, nothing happen when i hold on the L button when switching on the power.
Wait! You're holding the wrong button when turning on your PSP! You need to hold the R Trigger (Right Trigger) when turning on the PSP to access the recovery mode.
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