my k810i shuts down by itself. anybody knows why?

[quasar]

I own a k810i and my problem is that every few days it shuts down by itself. It kills me not knowing why and what can be done to fix it.

Here's the story: I bought the phone from a stranger (it showed only 40 min of total talk time, so I figured he's telling the truth and is a new phone) and for a week it had no problems. I decided to update vie SEUS, everything worked fine, but since then the phone keeps shutting down by itself. Situations in which happened to shut down: while talking, while initiating a call, when receiving a call, when unpluging the handsfree. It might have sometihing to do with the low temperature as it's winter in my country but I can't confirm this.

I suspect the new FW is the problem because previously a had a k610i for 9 months and never had problems. But 1 week before selling it (the k610i) I updated the FW and the new owner has the same problem now, it shuts down. He sais that he suspects it has something to do with the battery being fully charged.

Also, can anyone explain what the information below realy means, like "UA version" or why I see there different SW versions?

software info:
R8BA024
prgCXC1250811_GENERIC_SM R8BA024

EPROM: R3A022
prgCXC1250616_EPROM_DB2020_HB106GENERIC_FOTA_SIMLO CK_FLAFLA_SIBLEY_SEMCUSB

LCD SW version
Main display
Current: 200610121

Camera SW versions
Camera
Current: 2.5
Video call camera
Current: 2.3

ITP SW version
CXC 125 0310 R2N

Customization
CDA102568/14 R8A
cxc1250813 R8BA024
EUROPE_5
Memory Stick:
CDA102803_3

Content version
PA4
Memory Stick: R5A

Java SW version JP-7.7
Text revision: CX

Update service SW
UA version:
CRH1069179 R3B021
2006-12-18 15:59

And another thing, before the software update I think that if I received a call while using the handsfree the ringtone could be heard in both headphones and the phone speaker. Now it's only heard in the headphones if the phone is on silent.

[jasmin]

Tried with a full flash ( main, filesystem and custom file ).

Nice day

[floyd]

Try to update it again by sonyericsson update software , but first try reset factory option !

[quasar]

I updated with the same FW one more time. 3 days have past and it seems ok. but this doesn't mean that it's fixed because in may work for a week without shutting down.

How can I tell which was the original FW, because I might choose to install that one as I'm suspecting it doesn't have this problem?

How about the software info, does anybody know what each field means?

[TheRascal]

Well always flash the phone with the latest FW.

[quasar]

Well always flash the phone with the latest FW.

It already was the lastest FW and I suspect this new FW is the problem. I heard other people saying that you shouldn't update the software as problems will rise.

Hey, did someone else had this problem with a SE phone?

[mohdumer]

I Am Using SE Phones Since Past 8 Years And Never Encountered With These Type Of Problems.

[nipun21]

try resetting your phone to factory settings, if it doesnt work update with sony ericsson update service.

[93bh]

did you do any modification? like patching?

[quasar]

did you do any modification? like patching?

no patching, just update via SEUS.