View Full Version : Recovering a dead k800
Hi,
I just bought a k800i on ebay, and instead of receiving a phone with random freezes, I got a brick. It is detected only by the pc if I press 2+5, won't give any indication it is charging (not even on the infrared port), and won't turn on.
I tried recovering the EROM, and even had success once, after a few tries:
Press "5" and "2" keys, hold them together and plug DCU60 USB cable.
Phone Connected...
Detected: DB2020: A1 Series
Flash ID: 0x897E - Supported
EROM CID Detected: 52
Status:3
EROM Update Ok!
All Done! - Time:00:00:02
But the phone still shows the same signs. I also tried to recover the EROM with a cruiser cable, but without success:
Connect and Power ON phone.
Phone Connected...
Detected: DB2020: A1 Series
Trying set speed on: 9600
Error: EsB
With the DCU-60, the usual error is:
Press "5" and "2" keys, hold them together and plug DCU60 USB cable.
Phone Connected...
Detected: DB2020: A1 Series
Error: EROM CL Wrong Response!
And the phone still won't be detected when I connect it pressing 'C', won't turn on or show any indication it is charging.
Can anyone help me?
KulanKendi
07-30-2008, 12:58
do phone is RED diode blinking ?
b.r.
Hi,
I just bought a k800i on ebay, and instead of receiving a phone with random freezes, I got a brick. It is detected only by the pc if I press 2+5, won't give any indication it is charging (not even on the infrared port), and won't turn on.
I tried recovering the EROM, and even had success once, after a few tries:
Press "5" and "2" keys, hold them together and plug DCU60 USB cable.
Phone Connected...
Detected: DB2020: A1 Series
Flash ID: 0x897E - Supported
EROM CID Detected: 52
Status:3
EROM Update Ok!
All Done! - Time:00:00:02
But the phone still shows the same signs. I also tried to recover the EROM with a cruiser cable, but without success:
Connect and Power ON phone.
Phone Connected...
Detected: DB2020: A1 Series
Trying set speed on: 9600
Error: EsB
With the DCU-60, the usual error is:
Press "5" and "2" keys, hold them together and plug DCU60 USB cable.
Phone Connected...
Detected: DB2020: A1 Series
Error: EROM CL Wrong Response!
And the phone still won't be detected when I connect it pressing 'C', won't turn on or show any indication it is charging.
Can anyone help me?
No, I only saw it blink one of the times I connected the cruiser cable.
KulanKendi
07-30-2008, 16:23
maybe it will be stupid question, but are U sure that battery is charged? :)
phone will not charge when not power on.
b.r.
No, I only saw it blink one of the times I connected the cruiser cable.
I'm not sure at all - I don't have another phone with a compatible battery. I'll check with a multimeter when I get home. But I left it charging for at least 4 hours, so it should have some charge, and the charger works well with my k850.
It is probably fully charged, as the multimeter shows nearly 5v, and I can also see that there is power on the phone terminals when I have the power cable connected.
I'm guessing it is probably beyond repair now, right?
Things are weirder now. I got it to show a Sony Ericsson logo by removing and reinserting the battery while pressing 2+5 and keeping the dcu-60 cable connected. Unfortunately it just hangs there, and isn't properly detected by the pc, shows up as a usb composite driver that isn't working properly. I don't know if I'll try to shut it down, or leave it in this hung mode "forever".
Well, now things have improved a lot! Suddenly the phone was recognized when I inserted it pressing 'C', so I reflashed it to the latest K800 CID52 firmware (R1KG001), and unlocked it. The only problem now - it won't use the keyboard when I try to enter the sim code. Entering flight mode (or normal mode without a sim) and entering the service menu lets me test the keyboard, and it seems to be ok, every key works, but at the sim code screen it just recognizes the "ok" key.
Now what?
OOOPS - the codes are asked - but with the screen area writing white on white. Doh. Inserting the right code lets me enter flight mode properly.
KulanKendi
08-01-2008, 12:10
U mean after insert sim phone lcd going to white??
b.r.
Well, now things have improved a lot! Suddenly the phone was recognized when I inserted it pressing 'C', so I reflashed it to the latest K800 CID52 firmware (R1KG001), and unlocked it. The only problem now - it won't use the keyboard when I try to enter the sim code. Entering flight mode (or normal mode without a sim) and entering the service menu lets me test the keyboard, and it seems to be ok, every key works, but at the sim code screen it just recognizes the "ok" key.
Now what?
OOOPS - the codes are asked - but with the screen area writing white on white. Doh. Inserting the right code lets me enter flight mode properly.
No, it just was showing no asterisks when I typed the pin. After the first time it defined a theme and now seems to be working well. I also found out that some of the problems where because of a bad battery connection, some times it will disconnect if the cover is open and need reseating.
Bad news. I was away one week, on holiday, and the first day the k800 started resetting, powering off, and just hanging with a white screen - WSOD, from the symptoms. Now it won't turn on again. The problem is that it already has version R3A022, and I was never able to flash it (EROM) with success. Any ideas?
Gave up, sent it to SE. Will see how much they want to charge to fix it.
KulanKendi
08-19-2008, 12:35
for 99% they will swap PCB. anyway please inform us what they did
b.r.
Gave up, sent it to SE. Will see how much they want to charge to fix it.
After one month at SE, the phone was returned to the shop Friday, with the indication that it is a software problem, and since the phone was sold in the UK and I am in PT they (SE) won't fix it. Very nice of them wasting one month of my time like that.
The shop technician will try to flash it today (I hope).
There was one difference with the phone - when I sent it it wouldn't turn on at all, now it hung at a white screen. Maybe there is still hope it will be shop flashable.
KulanKendi
09-15-2008, 12:44
so now looks like GDFS problem, but gdfs problem can't refuse flashing phone etc. Oka let us know if he success or not.
b.r.
After one month at SE, the phone was returned to the shop Friday, with the indication that it is a software problem, and since the phone was sold in the UK and I am in PT they (SE) won't fix it. Very nice of them wasting one month of my time like that.
The shop technician will try to flash it today (I hope).
There was one difference with the phone - when I sent it it wouldn't turn on at all, now it hung at a white screen. Maybe there is still hope it will be shop flashable.
And now it is official, I have a brick. The guy at the shop tried to flash it, but it would disconnect at 70-80%. Any ideas?
KulanKendi
09-16-2008, 00:11
believe me is hardware problem, flash chip refuse to flash sectors because is damaged( flash chips are divided to sectors so if one sector fail then other will works- able to flash them)
As I see from logs U used cruiser box, this box need a bit different settings in KK while open port(at compile time) so that's why U got many errors while communication(many times U try do EROM UPDATE etc)
b.r.
And now it is official, I have a brick. The guy at the shop tried to flash it, but it would disconnect at 70-80%. Any ideas?
Yes, I tried both with cruiser cable and DCU-60, in the hope that the cruiser cable would allow me to flash when the dcu-60 failed.
So, now there is nothing else to do, right? Unless I can find someone who can do surface mount soldering and replace the flash chip, if indeed it is bad and it isn't just a bad solder joint or a short circuit, it is as good as dead.
KulanKendi
09-16-2008, 13:32
yes, replace flash chip on this phone can cost more than pcb swap :) because flash chip and cpu are glued.
b.r.
Yes, I tried both with cruiser cable and DCU-60, in the hope that the cruiser cable would allow me to flash when the dcu-60 failed.
So, now there is nothing else to do, right? Unless I can find someone who can do surface mount soldering and replace the flash chip, if indeed it is bad and it isn't just a bad solder joint or a short circuit, it is as good as dead.
Is there any way I can test if the flash chip is indeed bad, some small program that tries to test the full flash?
Things got weird again. I decided to disassemble it, check to see if there was something obviously wrong. No broken ribbons, no loose chips, so I reassembled it. When I inserted the camera cover, it turned on - and started working, still with the customized k810 firmware, as it had never failed. Of course, it has no sim inserted. So, what do I do now? Do I risk turning it off? Do I reflash it? What is your advice?
Warptech
09-17-2008, 06:12
give it a good flow and then if problem still there re-flash it
give it a good flow and then if problem still there re-flash it
A good flow? I'm sorry, my first language isn't english, what does that mean?
Never mind, it apparently is dead again. I opened it up again to clean some dirt specs I had left between the screen and the LCD, and it won't turn on again. :(
And it works again... Looks like either a bad solder joint or a damaged track in the pcb. I even managed to reflash it with SEUS - which sim-locked it again, even though I had unlocked it here. Is the k800 unlock only a patch unlock?
KulanKendi
09-17-2008, 13:13
so phone is alive now ?
b.r.
And it works again... Looks like either a bad solder joint or a damaged track in the pcb. I even managed to reflash it with SEUS - which sim-locked it again, even though I had unlocked it here. Is the k800 unlock only a patch unlock?
so phone is alive now ?
b.r.
It seems so. At least it hasn't crashed or reset since I flashed it with SEUS, but I also can't use it as it is simlocked again (stupid idea I had).
Tonight I'll try unlocking it with kulankendi as I don't have here my login information.
I am still afraid it is a pcb problem, and it will crash/lock up while walking or something, as it did before.
It won't start again after I tried another SIM. I gave up, it will be up for auction in ebay today.
stylemobile
09-21-2008, 17:48
hi bro u can flash it with lateset version .i solve this pro many time.all ok.ty it and say thanks.to me
I did that, and it started resetting and hanging again as soon as I changed the SIM card. If you want to give it a try, it is up for sale on ebay. I am just tired of this phone.