SERVICE MODE DOWNGRADING - 3.55 [OUTDATED]

**altimit** · 01-07-2011,01:26 AM

Don't forget the "successful" log, where it fails at Blu-ray drive revoke. wonder if my bdrom is toast.
http://pastie.org/1436440

**lauroree** · 01-07-2011,01:50 AM

you seems right there are not Cygwin friendly, I was having headache with it lately.

**altimit** · 01-07-2011,02:01 AM

Debug 2.36 starts to install on service mode xmb and fails at 70%. fails instantly like everything else with lv2diag

**ianrobbie** · 01-07-2011,02:09 AM

Hi guys, sorry to interrupt with a noobish question, but has anyone achieved a successful downgrade yet?
I've been following the forum for the last few hours and it consistently staggers me with just how much you guys know.
I used to have a 60Gb phat until it YLOD'ed and my replacement was updated by the seller before I got it, so I'm stuck on 3.55 with an AVRXPLAIN board, 500 GB of games but nothing to run them on!
Anyway, thanks for the efforts.
Here's hoping!

**bigdaddie** · 01-07-2011,02:31 AM

I know this is not about downgrading from 3.55 but i just want to share this cause it maybe related to the problem:

There's already a problem with the service mode downgrading/upgrading-method starting with FW 3.41!

First i downgraded from 3.41 to 3.15, then tried service mode upgrading from 3.15 to a higher firmware.

I checked my logs and i noticed that the upgrade failed right after the BD player was revoked and just before the Program Revoke List was updated and there's a problem writing the bdp revoke package, see below:

Code:

Log from all firmwares below 3.41:
Bul-ray Disc Player Revoke done(0x8002f000)
...
write bdp revoke package elapsed = 2262 msec

Code:

Log from firmware 3.41 (failed):
Bul-ray Disc Player Revoke done(0x8002f057)
update package elapsed time = 217631 msec
Updating or Verifying failure 0x8002f057
...
write bdp revoke package elapsed = 1 msec

What does this mean and is it related?

It's impossible to do a successful service-mode upgrade (with dongle, .self file and UPDATE.PUP on USB device) from a lower firmware back to 3.41 (haven't tried to go higher then 3.41 but i guess that won't work either).
All firmwares below 3.41 revoke at 0x8002f000.
But firmware 3.41 (and higher?) revokes at 0x8002f057.
There's a problem writing the bdp revoke package when upgrading to 3.41.
You can do an official upgrade to 3.41, but because that generates no log i can not check if something goes wrong.

My theory: only when downgrading below 3.41 you will lose bluray functionality.
I would like to test an UPDATE.PUP from 3.41 or higher that revokes at 0x8002f000 or a .PUP from 3.40 or lower that revokes at 0x8002f057.
Is that possible with the now available tools?

**JJJAGUAR** · 01-07-2011,02:31 AM

Mmm maybe this could work in 3.50 right? I say to try in a new ps3 cech 2501B which does not allow the downgrade by the normal method.
But I do not want to risk a serious brick ...

**MRDOCA** · 01-07-2011,02:51 AM

Twitter / Youness Alaoui: First downgrade from 3.55 ...

**eliteaaron** · 01-07-2011,02:55 AM

does this work or not?

**[C*]** · 01-07-2011,03:01 AM

Originally Posted by MRDOCA

Twitter / Youness Alaoui: First downgrade from 3.55 ...

Grand news

Was gonna post it in member submissions, but I remember Gary saying he only posts stuff on the front page if it's done.

Edit: NVM someone has done it anyway.

**MaNa** · 01-07-2011,03:05 AM

Originally Posted by Robocrop

Welcome to the forum, nice contribution in this thread also

you much better

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