PRS-505 Restoring Firmware after PRS+

suecsi · 05-25-2010, 06:00 PM

PRS+ created some files starting 1.2 as I 'downgraded' to the US firmware in order to try PRS+

I can't seem to find instructions on what to do with these files to get the UK firmware back on there - there is no download on Sony or anything either (not for UK anyway).

I might sell the 505 so would prefer to restore to UK rather than US firmware.

kartu · 05-26-2010, 01:54 AM

Did you save the backup files, created by PRS+ installer?

suecsi · 05-26-2010, 07:42 AM

Yes - there are about 6-7 files (I am not at the relevant computer) that mostly or all start with 1.2 (which I guess is related to the firmware version in the UK).

I moved them off the device and on to a folder on my pc to back them up.

kartu · 05-26-2010, 08:13 AM

suecsi
You have to create md5 files with md5 hash of the saved files (using, for example this or any other utility http://www.winmd5.com/) you only need rootfs and fsk.

Download installer, in PRSPInstaller\Sony Reader\software\firmware\505\ replace:
1) Fsk.img with corresponding backup file
2) Edit Fsk.img.md5 and put updated hash info there
3) 1.1.00.18040.root file with corresponding backup file (1.2....)
4) Edit 1.1.00.18040.root.md5 content accordingly

Then start PRS+ installer, go to advanced settings, force flash root fs then force flash fsk.

That should restore your UK firmware.

suecsi · 05-26-2010, 08:32 AM

So I only need to create the md5 files for the backed up versions of rootfs and fsk?

Edit these two files in the PRSP installer directory as above (steps 2 and 4).

For Steps 1 and 3, replace those named files with the same named files from the backup.

Go to PRS+ installer and do the flash root and flash fsk (assume these will be options under Advanced Settings.

Sorry if I am repeating what you told me - just trying to get it clear in my own head as this is the first time I've ever flashed an e-reader device!

kartu · 05-26-2010, 08:47 AM

suecsi
Yes, you got it right.

suecsi · 05-26-2010, 03:03 PM

kartu

I don't have files in the backup called fsk.img or

This is what I have:-

1.2.00.18050.boot
1.2.00.18050.boot.0
1.2.00.18050.fsk
1.2.00.18050.fsk.0
1.2.00.18050.root
1.2.00.18050.root.0
1.2.00.18050.root2
1.2.00.18050.root2.0

So I can see what files I need to replace at step 3 with the hash from 1.2.00.18050.root

Do I actually need to create 2 new files called rootfs and fsk?

I'm a little confused

Could you possibly point me in the right direction of which files from the above relate to each step?

kartu · 05-27-2010, 01:59 AM

1.2.00.18050.fsk => this is your Fsk.img
1.2.00.18050.root => this is your 1.1.00.18040.root

.0 files mean that you've backed it up 2 times ^^.

suecsi · 05-31-2010, 07:41 AM

Hi Kartu

I have done all above and got the option to flash root under Expert Options - but not the option to flash fsk. I have done the flash root and rebooted, for the moment it is still the same.

What step did I miss (unintentionally).

At least it is not bricked - still works fine but is still under PRS+ firmware version.

kartu · 06-01-2010, 02:29 AM

suecsi
You did everything right.
PRS+ is located only in FSK. It seems to work just fine with UK firmware.

The option to flash Fsk partition is called "Flash PRS+ Firmware".

05-25-2010, 06:00 PM	#1
suecsi Rock Chick Posts: 429 Karma: 4965 Join Date: May 2009 Location: near Heathrow Device: Kindle 2i, Kindle DX, Kindle 3G	Restoring Firmware after PRS+ PRS+ created some files starting 1.2 as I 'downgraded' to the US firmware in order to try PRS+ I can't seem to find instructions on what to do with these files to get the UK firmware back on there - there is no download on Sony or anything either (not for UK anyway). I might sell the 505 so would prefer to restore to UK rather than US firmware.

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05-26-2010, 01:54 AM	#2
kartu PRS+ author Posts: 1,637 Karma: 2446233 Join Date: Dec 2007 Device: Sony PRS-300, 505, 600, 650, 950	Did you save the backup files, created by PRS+ installer?

05-26-2010, 07:42 AM	#3
suecsi Rock Chick Posts: 429 Karma: 4965 Join Date: May 2009 Location: near Heathrow Device: Kindle 2i, Kindle DX, Kindle 3G	Yes - there are about 6-7 files (I am not at the relevant computer) that mostly or all start with 1.2 (which I guess is related to the firmware version in the UK). I moved them off the device and on to a folder on my pc to back them up.

05-26-2010, 08:13 AM	#4
kartu PRS+ author Posts: 1,637 Karma: 2446233 Join Date: Dec 2007 Device: Sony PRS-300, 505, 600, 650, 950	suecsi You have to create md5 files with md5 hash of the saved files (using, for example this or any other utility http://www.winmd5.com/) you only need rootfs and fsk. Download installer, in PRSPInstaller\Sony Reader\software\firmware\505\ replace: 1) Fsk.img with corresponding backup file 2) Edit Fsk.img.md5 and put updated hash info there 3) 1.1.00.18040.root file with corresponding backup file (1.2....) 4) Edit 1.1.00.18040.root.md5 content accordingly Then start PRS+ installer, go to advanced settings, force flash root fs then force flash fsk. That should restore your UK firmware.

05-26-2010, 08:32 AM	#5
suecsi Rock Chick Posts: 429 Karma: 4965 Join Date: May 2009 Location: near Heathrow Device: Kindle 2i, Kindle DX, Kindle 3G	So I only need to create the md5 files for the backed up versions of rootfs and fsk? Edit these two files in the PRSP installer directory as above (steps 2 and 4). For Steps 1 and 3, replace those named files with the same named files from the backup. Go to PRS+ installer and do the flash root and flash fsk (assume these will be options under Advanced Settings. Sorry if I am repeating what you told me - just trying to get it clear in my own head as this is the first time I've ever flashed an e-reader device!

05-26-2010, 08:47 AM	#6
kartu PRS+ author Posts: 1,637 Karma: 2446233 Join Date: Dec 2007 Device: Sony PRS-300, 505, 600, 650, 950	suecsi Yes, you got it right.

05-26-2010, 03:03 PM	#7
suecsi Rock Chick Posts: 429 Karma: 4965 Join Date: May 2009 Location: near Heathrow Device: Kindle 2i, Kindle DX, Kindle 3G	kartu I don't have files in the backup called fsk.img or This is what I have:- 1.2.00.18050.boot 1.2.00.18050.boot.0 1.2.00.18050.fsk 1.2.00.18050.fsk.0 1.2.00.18050.root 1.2.00.18050.root.0 1.2.00.18050.root2 1.2.00.18050.root2.0 So I can see what files I need to replace at step 3 with the hash from 1.2.00.18050.root Do I actually need to create 2 new files called rootfs and fsk? I'm a little confused Could you possibly point me in the right direction of which files from the above relate to each step?

05-27-2010, 01:59 AM	#8
kartu PRS+ author Posts: 1,637 Karma: 2446233 Join Date: Dec 2007 Device: Sony PRS-300, 505, 600, 650, 950	1.2.00.18050.fsk => this is your Fsk.img 1.2.00.18050.root => this is your 1.1.00.18040.root .0 files mean that you've backed it up 2 times ^^.

05-31-2010, 07:41 AM	#9
suecsi Rock Chick Posts: 429 Karma: 4965 Join Date: May 2009 Location: near Heathrow Device: Kindle 2i, Kindle DX, Kindle 3G	Hi Kartu I have done all above and got the option to flash root under Expert Options - but not the option to flash fsk. I have done the flash root and rebooted, for the moment it is still the same. What step did I miss (unintentionally). At least it is not bricked - still works fine but is still under PRS+ firmware version.

06-01-2010, 02:29 AM	#10
kartu PRS+ author Posts: 1,637 Karma: 2446233 Join Date: Dec 2007 Device: Sony PRS-300, 505, 600, 650, 950	suecsi You did everything right. PRS+ is located only in FSK. It seems to work just fine with UK firmware. The option to flash Fsk partition is called "Flash PRS+ Firmware".

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