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Downgrading P990i from R6 to R5 |
my_p990i
Joined: Dec 12, 2006
Posts: 91
From: Cebu, Phils.
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anybody here knows a good way of doing this? if so, please share tips/experience...thanks a lot |
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dominique
Joined: Apr 15, 2003
Posts: 104
From: Germany
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Hi,
it works pretty much the same like upgrading a non Generic World P990 to R6. You have to change the CDA of the phone. I did it with Kulankendi and changed it from Generic World 1 to CDA162008/66 for Generic Netherlands. (There are quite a lot of threads regarding how to change the CDA).
If you run SE Update Service then, you will get R5A17.
You won't be able to restore Backups made with R6 or R5 afterwards because PC Suite will say your phone is not compatible.
To restore a backup you have to go to the registry: [HKEY_CURRENT_USER\Software\Teleca\Mobile Connectivity Suite\Backup Manager\3.0\Backup Engine\Backups]
There is a list of all your current backups. Each Backup hides behind a Numer like: 128160433472780000
Behind each number is another registry key: BackupDeviceVersion
If you change its Value from R6D23 or R5A17 to R5A16 - PC Suite will allow to restore the backup.
I just restored Contacts, Calendar, Messages and Notes. Everything works fine since then.
Many greetings
Dominique
[ This Message was edited by: dominique on 2007-06-21 13:03 ] |
p990.at
Joined: Feb 22, 2007
Posts: 10
PM |
Thanks for sharing dominique.
But this means that we must know what is the latest firmware of the targeted CDA on SEUS? In your case it was R5A13.
It will be nice if we can find a way to cheat SEUS to flash our p990 R6 with existing R5 files that we copied into the blob.fs folder. i.e. skip the downloading of new R6 files. Any guru out there able to mod the SEUS exe file? 
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dominique
Joined: Apr 15, 2003
Posts: 104
From: Germany
PM |
Hi,
you have to know which CDA will result in which firmware version. But you can get this information here.
Then you just change to a CDA with the desired firmware version.
Of course you have to be quite desperate to do that - but some people are.
Many greetings
Dominique
On 2007-06-24 13:22:55, p990.at wrote:
Thanks for sharing dominique.
But this means that we must know what is the latest firmware of the targeted CDA on SEUS? In your case it was R5A13.
It will be nice if we can find a way to cheat SEUS to flash our p990 R6 with existing R5 files that we copied into the blob.fs folder. i.e. skip the downloading of new R6 files. Any guru out there able to mod the SEUS exe file?
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Nokku
Joined: Feb 05, 2007
Posts: 39
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why you want to downgrade? the R6 is much more stable than R5 |
strizlow800
Joined: Aug 23, 2006
Posts: > 500
From: Macedonia, Skopje
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@Nokku - The R6 maybe is more stable than the R5 firmware, there are also some bugs fixed. But the problem is that there are some new bugs appeared that some users cannot live with them so they want the old R5 firmware back. After all I would downgrade too. In my opinion there is a bug which turns the phone into a "phone". Actually when we use the phone without flip (with R6) the space button (and that is meant to turn on the phone so we can dial numbers) does not work well so we must enter the phone menu from everywhere elase except from the assigned button for that function... There are some other new bugs too so the phone stability isn't the only point when upgrading a firmware.
_________________
Only Take a Sony Ericsson
[ This Message was edited by: strizlow800 on 2007-06-24 15:33 ] |
Zed@CPS
Joined: Nov 08, 2004
Posts: > 500
From: CellPhoneSoft
PM, WWW
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Quote:
| when we use the phone without flip (with R6) the space button (and that is meant to turn on the phone so we can dial numbers) does not work well |
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Use CellPhone Space, a free program that solves that bug.
[ This Message was edited by: Lisa@CPS on 2007-06-24 17:37 ] |
strizlow800
Joined: Aug 23, 2006
Posts: > 500
From: Macedonia, Skopje
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I know that program man it's no problem for me as I don't use P990 and I don't face these problems  .
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Nitro Fan
Joined: Jun 11, 2003
Posts: > 500
From: London
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On 2007-06-24 16:13:00, Nokku wrote:
why you want to downgrade? the R6 is much more stable than R5
In some ways it is, but it creates a real problem with TomTom as you can no longer recive or make calls whilst it is running! and it mucks up automatic email downloads at pre determined times. Cheers Sony Ericsson you have excelled yourselves
I have owned the ... T68i T610, P800, P900, P910, P990, W950, P1, W960 But SE have now totally lost the plot. |
ares
Joined: Dec 11, 2003
Posts: > 500
From: Coimbra, Portugal
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On 2007-06-25 11:58:12, Nitro Fan wrote:
On 2007-06-24 16:13:00, Nokku wrote:
why you want to downgrade? the R6 is much more stable than R5
In some ways it is, but it creates a real problem with TomTom as you can no longer recive or make calls whilst it is running! and it mucks up automatic email downloads at pre determined times. Cheers Sony Ericsson you have excelled yourselves
Nitro, just tried what you refer with TomTom running, and it worked...i both was able to receive and make calls.
Have to check the automatic email downloads though
SE w880 + Iphone 4 16gb |
stallion
Joined: Jun 08, 2005
Posts: 133
From: London
PM |
i noticed with R5 you could make a SMS and the latest contacts stay in a recently sent contacts menu to save you going through your phone book and ticking a contact?
R6 is pony
for me its step back
then again i would'nt mind reverting to R5 for this reason... can i do it for free?? |
Nitro Fan
Joined: Jun 11, 2003
Posts: > 500
From: London
PM |
On 2007-06-25 12:30:16, ares wrote:
On 2007-06-25 11:58:12, Nitro Fan wrote:
On 2007-06-24 16:13:00, Nokku wrote:
why you want to downgrade? the R6 is much more stable than R5
In some ways it is, but it creates a real problem with TomTom as you can no longer recive or make calls whilst it is running! and it mucks up automatic email downloads at pre determined times. Cheers Sony Ericsson you have excelled yourselves
Nitro, just tried what you refer with TomTom running, and it worked...i both was able to receive and make calls.
Have to check the automatic email downloads though
Hey ares good to see you back! I have tried this again today and it is still causing me probs, let me explain.
I can make a call now but cant get back to TomTom the phone freezes and requires a restart
Incomming calls are automaticaly handled by the phone not to my BT headset and I cant find a way of retrieving them in the headset.
Heeeeelp!!
I have owned the ... T68i T610, P800, P900, P910, P990, W950, P1, W960 But SE have now totally lost the plot. |
amanno1
Joined: Sep 05, 2006
Posts: > 500
From: HELL ON EARTH
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Take it to a service centre.They downgraded my p910 from r5 to r4.
ANTICIPATION OF DEATH IS WORSE THAN DEATH ITSELF!! |
my_p990i
Joined: Dec 12, 2006
Posts: 91
From: Cebu, Phils.
PM |
anybody here successfully downgraded their p990i FW ? maybe some steps (not involving service center & such...just the DIY method) |
AbuBasim
Joined: Nov 04, 2005
Posts: > 500
PM |
On 2007-06-26 10:44:01, Nitro Fan wrote:
. . .
Incomming calls are automaticaly handled by the phone not to my BT headset and I cant find a way of retrieving them in the headset.
. . .
Go to Control panel -> Call settings -> Handsfree and enable the option "Always route answered calls to Bluetooth".
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Posted: 2007-06-21 13:15
Sony Ericsson software/hardware support! 
