If the US release will be shipping with v1.5(?) of the firmware and must already have shipped to stores, is there any definitive word on the differences between 1.0 and 1.5? and why isn't it available for download already?
Just wondered is all...
Firmware
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Sir_LANs-a-lot
- Posts: 16
- Joined: Mon Feb 28, 2005 3:12 am
Whether or not you are being serious, I'm not sure! I'll tell you anyway...ooPo wrote:Uhm... what bugs? :)
1. The JPEG viewer has some issues. Selecting to 'Zoom In' on a JPEG has caused my PSP to freeze, requiring a power-off.
The problem could not be reproduced, so it is not a problem with the JPEG itself. It has happened a couple of times though.
2. With Ridge Racers (I believe. Untested with Lumines), as the game boots up, hitting 'Home' continuously, until it finally works and the "Do You Want To Exit The Game?" screen appears and selecting 'Yes' causes the PSP to freeze. Or at least it did twice in a row. Then I didn't try again :)
I can't think of any other bugs I have encountered, nor do I know if these are problems common to all PSPs.
bugs wise, there seems to be a problem after inserting a UMD just after system bootup. The disk cant be read. If the disc is in the system at boot up or after a significant time after boot up it will work fine. Literally, its just as you get into the menu, insert the disc. Ive heard that mentioned by others, but I cant remember where.
Other than bugs, im kind hoping they are gonna improve mp3 playback. Its severly lacking when compared with video playback. It needs to be able to skip to a position within a track and to be able to keep the position when system goes into standby. Its not fun when your listening to a 2 hour radio show, only for the system to go into standby while you are talking to someone and having to fast forward at 1x to find your position for a good 10-15 minutes.
Other than bugs, im kind hoping they are gonna improve mp3 playback. Its severly lacking when compared with video playback. It needs to be able to skip to a position within a track and to be able to keep the position when system goes into standby. Its not fun when your listening to a 2 hour radio show, only for the system to go into standby while you are talking to someone and having to fast forward at 1x to find your position for a good 10-15 minutes.
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Guest
Sure, when Sony lets us. There are any number of people watching Sony with an eagle eye to crow when a firmware update is available for the fetching. Sit tight, I know the wait must be agonizing. ;)GoGo22 wrote:If the us psp will have the 1.5v cant we (i mean the jap psp users) use that firmware ???
I don't think firmware ver. 1.5 with PSP-1001K will include all the new features that we have been expecting since the leaked firmware found on Internet many weeks ago.
IGN does not have mentioned new apps other than the one already embedded with the psp-1000k (jap)
so, this makes me think that we "PSP-1000K" users will have to wait few more weeks/months before the "precious" new firmware to be realeased.
IGN does not have mentioned new apps other than the one already embedded with the psp-1000k (jap)
so, this makes me think that we "PSP-1000K" users will have to wait few more weeks/months before the "precious" new firmware to be realeased.
If a certain jpeg crashes the system then id take a look at that as an opportunity rather than a setback. maybe you want to hand that pic over (if its appropriate :P) to another board member with the proper tools to try to figure if this is somekind of overflow. with overflows, the words (arbitrary code) usualy follow close behind.pdc wrote:Whether or not you are being serious, I'm not sure! I'll tell you anyway...ooPo wrote:Uhm... what bugs? :)
1. The JPEG viewer has some issues. Selecting to 'Zoom In' on a JPEG has caused my PSP to freeze, requiring a power-off.
The problem could not be reproduced, so it is not a problem with the JPEG itself. It has happened a couple of times though.
2. With Ridge Racers (I believe. Untested with Lumines), as the game boots up, hitting 'Home' continuously, until it finally works and the "Do You Want To Exit The Game?" screen appears and selecting 'Yes' causes the PSP to freeze. Or at least it did twice in a row. Then I didn't try again :)
I can't think of any other bugs I have encountered, nor do I know if these are problems common to all PSPs.
The downside of automatic firmware upgrades, is that if we can find a weakness that allows us to do homebrew (e.g., the Independence Day exploit on the PS2), it will be pretty easy for Sony to close it up and distribute it to all the current PSPs that have been sold (as opposed to waiting until another production run, like they've had to do on the PS2). Wow, that was a long sentence.
Just my 2c
Just my 2c
Like I said, this crash cannot be reproduced. I blame it on random errors from Sony's notoriously dodgy software ^_^kry.sys wrote: If a certain jpeg crashes the system then id take a look at that as an opportunity rather than a setback. maybe you want to hand that pic over (if its appropriate :P) to another board member with the proper tools to try to figure if this is somekind of overflow. with overflows, the words (arbitrary code) usualy follow close behind.
As for things like this being seen as an opportunity, I'm not a hacker unfortunately :( so I wouldn't know where to start.
Anyway, for the curious, here is the JPEG that froze my PSP on a couple of occasions.
http://pdc.me.uk/psp/garun.deviantart.c ... f_Fire.jpg
Even if you could find what you could confirm is a buffer overflow in the JPEG viewer, what could you do with it? Without knowing how to access the GPU, MS, or even the serial port, what good does it do?
The same question can be posed to those trying to find a way in through these firmware images. Where are you going to get the basic info you need to get something on the screen?
The same question can be posed to those trying to find a way in through these firmware images. Where are you going to get the basic info you need to get something on the screen?
"He was warned..."
hmm... I swear something odd is going on.
Curious as to what could crash the PSP, I took that above-linked image into a hex editor and made some selective, subtle changes.
Now I can crash my PSP almost at will :\
The PSP will freeze, rendering all controls dead and in 3-5 secs will power down.
The three JPEGs are here: http://pdc.me.uk/psp/freeze/
It takes some time so I just now attempted to write down a sure way of reproducing it.
I powered up and opened a3.jpg by pressing Circle and then once the picture was on screen, I selected the 'Display' option via the Triangle menu.
It froze straight away!
Now I power back up, open a3.jpg, follow the same procedure and there are no problems whatsoever.
Basically, by
1. Opening the JPEG for viewing (pressing circle to open)
2. Accessing the Triangle menu and selecting 'zoom'
3. Accessing the Triangle menu and selecting 'display'
All in a seemingly random order, my PSP will certainly crash pretty quickly.
I appreciate this is an awful method and I can gain nothing from it.
I've had no problems whatsoever with any other JPEGs though.
Perhaps someone with a 1st gen Japanese PSP could have a go,
see if I just have a dodgy PSP! :\ *worries*
Curious as to what could crash the PSP, I took that above-linked image into a hex editor and made some selective, subtle changes.
Now I can crash my PSP almost at will :\
The PSP will freeze, rendering all controls dead and in 3-5 secs will power down.
The three JPEGs are here: http://pdc.me.uk/psp/freeze/
It takes some time so I just now attempted to write down a sure way of reproducing it.
I powered up and opened a3.jpg by pressing Circle and then once the picture was on screen, I selected the 'Display' option via the Triangle menu.
It froze straight away!
Now I power back up, open a3.jpg, follow the same procedure and there are no problems whatsoever.
Basically, by
1. Opening the JPEG for viewing (pressing circle to open)
2. Accessing the Triangle menu and selecting 'zoom'
3. Accessing the Triangle menu and selecting 'display'
All in a seemingly random order, my PSP will certainly crash pretty quickly.
I appreciate this is an awful method and I can gain nothing from it.
I've had no problems whatsoever with any other JPEGs though.
Perhaps someone with a 1st gen Japanese PSP could have a go,
see if I just have a dodgy PSP! :\ *worries*
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Sir_LANs-a-lot
- Posts: 16
- Joined: Mon Feb 28, 2005 3:12 am
I suspect you are right, rather than it being protection against buffer overflow exploits.bartzilla wrote:Probably a watchdog timer. If the watchdog doesn't get touched after a few seconds (ie. the OS is deadlocked) it probably forces a hard shutdown. Inelegant, but not so much so as a reset button.
I give my PSP a 'challening' ICON1.PMF file to play. The PMF player dies.
And if you try to play another PMF file, the PSP freezes.
Same symptoms apply - frozen screen, dead controls... or so it seems.
This time, screen brightness can still be changed and if you hold the 'mute' button, the PSP will be muted upon reboot.
So the PSP is well enough to touch the watchdog timer.
Also, you can put the PSP into sleep mode. However, it does not wake up from where you were - it boots up from scratch.
The modified ICON1.PMF file clearly crashes the PMF-playback sub-system, as it stops PMF playback and then the PSP will semi-freeze when you next try to play a PMF file. You can carry on as normal otherwise.
The UMD preview video is a PMF file, as this crashes it too.
I wonder if there is any way for anything interesting to come of this...
I don't know if PMFs are used in the games themselves either.
Either way, the PSP certainly has some issues and it's surely only a matter of time before something interesting is found.
beyond that the problems i see with writing overflow shell code is where the pointers in memroy for certain peices sit.. among other things.. shell code requires more knoledge of a system than standard software developers possess. but it is a start. any software developers can run some simple code to get memory locations and pointers just like you would on any os/platform.mrbrown wrote:Even if you could find what you could confirm is a buffer overflow in the JPEG viewer, what could you do with it? Without knowing how to access the GPU, MS, or even the serial port, what good does it do?
The same question can be posed to those trying to find a way in through these firmware images. Where are you going to get the basic info you need to get something on the screen?
i mean.. im not saying a jpeg that crashes the system is the coolest thing ever for homebrew... but it IS a start. we dont even know if its an overflow.. or an underrun.. or an infinate loop.
blah...