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< Esato Forum Index > Sony Ericsson / Sony > Technical > Turning on SE K850i. Bookmark topic

hi everyone:

I going to explain a little bit. Today I took my SE K850i phone, because I wanted to make a phone call but it turned off automatically. So now when I tried to turn it back on it did not work. When I turn it on just keyboard and camera light turn on and vibrates, then, it turns off and so on, and turn on and off....... Please help in how I can resolve this issue....thank you.

I want to know if there exist some program to fix the issue and I hope to resolve this problem.

thank you again...
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Posted: 2009-08-28 05:43:26
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Apparently, you have BROD in your K850. You need reinstalling your firmware with SEUS:

http://www.sonyericsson.com/c[....]s/detailed/updateservice/k850i
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Posted: 2009-08-28 06:26:04
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Thanks bro. I tried doing that, but says " You already have the latest software installed" , so the program doesn't let me install anything...after I unpressed the C- button, it goes just to "Finish"

Please help.. I don't want to send to Sony Ericsson Repair Center.



Is there a way to "erase" the actual firmware and reinstall it back?
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Posted: 2009-08-28 06:59:00
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You have two alternatives now:

1. Change your CDA number with customize_upgrade file, using a program called A2uploader, so SEUS can reinstall your firmware, or

2. Flash it yourself with A2uploader.

Check this topic so you can read more about the subject and gain confidence If you have any questions just post them.

Tutorial: Flashing A2 phones
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Posted: 2009-08-28 07:13:39
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Thank you again....

I still don't understanding....I am a beginner using the A2uploader.....in the guide you gave me.....appears some files that I don't know where to get.... (after the user press "ADD", he uses some files that I don't know them)

You are been very helpful, but if you tell me more I will very grateful with you...thanks again I appreciate your time



Sorry for my bad English..!
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Posted: 2009-08-28 07:42:24
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Ok, no problem

Firmware it's made by 2 files:

- A *.fs file (Fyle System), and
- A *.mbn file (Main)

These two files are specific for each model and each version of firmware. I recommend you installing R1FA035 firmware, as it's the latest generic version. You have to choose an appropiate File System according what region you are, as this file set the languages your phone will have. I'll recomend you using Western Europe or America if you live in these regions. You can search in 4shared for these files.

Good luck
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Posted: 2009-08-28 08:03:14
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Don't forget to get the Custom file also. You'll need it to let your phone work. All files can be found at topsony.
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Posted: 2009-08-29 01:08:49
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Thank you. The problem is the following, there are many custom files for one phone, so, how do I know which one will work?....



Thank you again.....
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Posted: 2009-08-29 05:17:36
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Hi again. I'm no sure if I'm doing right or not, but as the Tutorial says...He drooped a file that is .fbn ( I don't know if this is the same that you are referring at). Then he drooped other fiiles that I got from a page that you gave me. PLease help me. please. I don't want to send to Sony Ericsson Customer Repair, eventhogh it's covered by the warranty.


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Posted: 2009-08-29 05:34:03
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Yes, it was a mistake of me. File System has *.fbn extension. Custom Pack its dependant what region you are. What languages had your phone or which ones you need?? And where are you located, so I can point specific files for you ..
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Posted: 2009-08-29 05:49:00
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