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Downgrading PS VITA using Charles Proxy?

Open discussions on programming specifically for the PS Vita.
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theleftykid
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Downgrading PS VITA using Charles Proxy?

Post by theleftykid » Thu Jan 23, 2014 3:20 am

Is it possible to downgrade our firmware using this software? Like editing the xml files, host and paths and using a downloaded OFW to push in the ps vita?
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grief3r
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Re: Downgrading PS VITA using Charles Proxy?

Post by grief3r » Thu Jan 23, 2014 4:16 am

no
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MostSignificantBit
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Re: Downgrading PS VITA using Charles Proxy?

Post by MostSignificantBit » Sun Jan 26, 2014 6:51 am

The Vita checks the firmware version, and compares it to the one already installed. If the firmware version is equal to or less than the version of the one installed, it will not install the new firmware.

This number cannot be changed because the updates are signed, and modification would break this signature.

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SMOKE
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Re: Downgrading PS VITA using Charles Proxy?

Post by SMOKE » Sun Jan 26, 2014 5:12 pm

MostSignificantBit wrote:The Vita checks the firmware version, and compares it to the one already installed. If the firmware version is equal to or less than the version of the one installed, it will not install the new firmware.

This number cannot be changed because the updates are signed, and modification would break this signature.
^This
Also, this question has been answered many times before. Next time use the search button ;)

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motu90
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Re: Downgrading PS VITA using Charles Proxy?

Post by motu90 » Mon Jan 27, 2014 1:43 pm

It would be painfully stupid by Sony to allow such a way to downgrade the Vita :D But on the other hand we know how stupid companies can be regarding security measures (see 10 days of hacking series :lol: )
My devices: PS1 + PS2 + PS3 | PSP + PSVITA

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albie85
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Re: Downgrading PS VITA using Charles Proxy?

Post by albie85 » Wed Jan 29, 2014 7:16 am

motu90 wrote:It would be painfully stupid by Sony to allow such a way to downgrade the Vita :D But on the other hand we know how stupid companies can be regarding security measures (see 10 days of hacking series :lol: )
What way are you talking about?? How would Charles work :?
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Avidity_X
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Re: Downgrading PS VITA using Charles Proxy?

Post by Avidity_X » Mon May 25, 2015 9:23 pm

What if you choose to update your ps vita and use charles proxy to replace the updat.pup file with a lower firmware version and it downloads the replaced updat.pup file that you choose thorugh map local,just like the way you can download any game on ps3 store and replace it with a different pkg file via charles proxy for the vita.

Do you think it's possible? Has anyone attempted this ?

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ch3wt0ys
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Re: Downgrading PS VITA using Charles Proxy?

Post by ch3wt0ys » Mon May 25, 2015 10:27 pm

Avidity_X wrote:What if you choose to update your ps vita and use charles proxy to replace the updat.pup file with a lower firmware version and it downloads the replaced updat.pup file that you choose thorugh map local,just like the way you can download any game on ps3 store and replace it with a different pkg file via charles proxy for the vita.

Do you think it's possible? Has anyone attempted this ?
Literally read the posts in this thread. The Vita checks the updates against the firmware already installed.

Even if you got it to download and prompt, as soon as it starts trying to install it, it'll fail. People have tried.
PSP-3001 4G : 6.20 LME-2.3
PS Vita PCH-1001 (Wifi Model) : 3.51 OFW
PS Vita PCH-1101 (3G Model) : 3.18 OFW
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Avidity_X
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Re: Downgrading PS VITA using Charles Proxy?

Post by Avidity_X » Wed May 27, 2015 12:27 pm

ch3wt0ys wrote:
Avidity_X wrote:What if you choose to update your ps vita and use charles proxy to replace the updat.pup file with a lower firmware version and it downloads the replaced updat.pup file that you choose thorugh map local,just like the way you can download any game on ps3 store and replace it with a different pkg file via charles proxy for the vita.

Do you think it's possible? Has anyone attempted this ?


Literally read the posts in this thread. The Vita checks the updates against the firmware already installed.

Even if you got it to download and prompt, as soon as it starts trying to install it, it'll fail. People have tried.
Ok, thanks for the answer, i just wanted to be 100% sure that it's not possible

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Kankertje
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Re: Downgrading PS VITA using Charles Proxy?

Post by Kankertje » Wed May 27, 2015 12:43 pm

Best you can do is reinstall current firmware.

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