Editing Downgrade BluRay Playback Issue
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[[Category:Software]] | |||
=PS3 BLU-RAY PLAYBACK PROHIBITED ROOT CAUSE ANALYSIS= | |||
==Introduction== | |||
Many users have experienced the loss of blu-ray playback on the PS3 after performing a system firmware downgrade to a previous version. Little was known about the cause of this prohibition early on, but this document will outline the causes and effects. | |||
==Overview== | |||
By the end of this document you will know the issue, the causes, and what is affected. | By the end of this document you will know the issue, the causes, and what is affected. | ||
==Reproducing Issue== | |||
To reproduce the issue a few pre-requisites must be met: | To reproduce the issue a few pre-requisites must be met: | ||
===Pre-requisites for Issue=== | |||
#Service JIG device | #Service JIG device | ||
##PSGrade | ##PSGrade | ||
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##3.41 modified version in the DGF.rar is not recommended but is not at issue | ##3.41 modified version in the DGF.rar is not recommended but is not at issue | ||
#PS3 with large NAND (fat models CECHA-CECHG) | #PS3 with large NAND (fat models CECHA-CECHG) | ||
##Keep in mind there are CECHG systems with small | ##Keep in mind there are CECHG systems with small NAND non-volatile memory that rely on HDD volatile memory for dev_flash3 and are unaffected | ||
#USB flash device | #USB flash device | ||
##Any freshly-formatted (BLANK) usb-based flash drive can be utilized | ##Any freshly-formatted (BLANK) usb-based flash drive can be utilized | ||
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===Steps to Reproduce Issue=== | |||
Steps required to reproduce the issue is the same methodology used to downgrade. | Steps required to reproduce the issue is the same methodology used to downgrade. | ||
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===Analyzing UPDATE_LOG.TXT=== | |||
An analysis of the UPDATE_LOG.TXT follows: | An analysis of the UPDATE_LOG.TXT follows: | ||
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==Restoring Service== | |||
:There are two different methods of restoring service as it was from backup, real backup, and derived backup. The two methods only differ in the origination of the backup files to be utilized, both methods ultimately will utilize the same files. | :There are two different methods of restoring service as it was from backup, real backup, and derived backup. The two methods only differ in the origination of the backup files to be utilized, both methods ultimately will utilize the same files. | ||
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==Fixing== | |||
With the root cause of the issue understood, potential methods of fixing the issue can be brain stormed and the original source of the issue can be outright blamed. | With the root cause of the issue understood, potential methods of fixing the issue can be brain stormed and the original source of the issue can be outright blamed. | ||
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#Reset the HRL on the drive to match the DRL1 and DRL2 files | #Reset the HRL on the drive to match the DRL1 and DRL2 files | ||
##This third Lv2diag.self should have been included in the DGF.rar package by the original creators to prevent this whole issue. | ##This third Lv2diag.self should have been included in the DGF.rar package by the original creators to prevent this whole issue. | ||