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[[Category:OtherOS]]
=Introduction=
=Introduction=
* It's a small and easy guide how to fix your DRL/CRL issues on GameOS with PS3 Linux.


=Tools=
=Tools=
* You need my latest ps3dm tool with VTRM commands retrieve and store_with_update.
ps3vuart-tools: http://gitorious.ps3dev.net/ps3linux/ps3vuart-tools


=DRL and CRL Hashes=
=DRL and CRL Hashes=


* DRL and CRL SHA1 hashes are stored on one of the encrypted data blocks (with 0x40 length each) inside VTRM FLASH region.
* DRL and CRL SHA1 hashes are store in VTRM FLASH region.
* First 20 bytes are SHA1 hash of DRL. Then following 20 bytes SHA1 hash of CRL.
* First 14 bytes are SHA1 hash of DRL. Then follow 14 bytes SHA1 hash of CRL.
* If you are using a FW without SS patch then use [[Authority ID]] '''0x1070000039000001''' as parameter to option '''-p'''.
 
 


Read current DRL and CRL SHA1 hashes from FLASH using VTRM service:
Read current DRL and CRL SHA1 hashes from FLASH using VTRM service:
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</pre>
</pre>


If you write '''wrong''' hashes '''intentionally''' then you won't be able to play BD movies and you will get the following message:
If you write wrong hashes intentionally then you won't be able to play BD movies and you will get the following message:
<pre>
<pre>
Playback of BDs is prohibited on this system.
Playback of BDs is prohibited on this system.
Contact technical support for assistance.
Contact technical support for assistance.
</pre>
</pre>
How to get correct DRL and CRL hashes:
<pre>
sudo mount /dev/ps3flash /mnt
sha1sum /mnt/data-revoke/drl/DRL1
8f0652bc6162a240362f90f1b2e5405bb82ee502  /mnt/data-revoke/drl/DRL1
sha1sum /mnt/data-revoke/crl/CRL1
96791f41f9a76f4d895dd5820db108ec03d19250  /mnt/data-revoke/crl/CRL1
</pre>
=Test=
* I intentionally wrote wrong DRL and CRL hashes with VTRM service store_with_update.
* After that i couldn't play my BD movies on GameOS.
* Then i wrote correct hashes again and BD playback is working again :)
{{Linux}}<noinclude>[[Category:Main]]</noinclude>
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