Reset gone wrong - AT&T Samsung Galaxy S II SGH-I777

I picked up a used i777 that was posted not to power on.replaced battery.it powered on.the phone is pretty beat up but it worked.problem was it had lock screen.so I wiped and reset.now it boots then immediately shuts down.does this in recovery also.can't get into download mode to reflash.
Phone appears to have kk6 is.couldn't unlock to check.any ideas on how to proceed or to look would be appreciated.

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This still sounds to me like a battery issue (either bad battery, incorrect battery type, or insufficiently charged), if it is constantly rebooting even in download or recovery mode.
You have posted a question about AOCP's dialer. Have you gotten past this rebooting issue?
rbb1robert said:
I picked up a used i777 that was posted not to power on.replaced battery.it powered on.the phone is pretty beat up but it worked.problem was it had lock screen.so I wiped and reset.now it boots then immediately shuts down.does this in recovery also.can't get into download mode to reflash.
Phone appears to have kk6 is.couldn't unlock to check.any ideas on how to proceed or to look would be appreciated.
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Dailer for my every day phone.
Boot problem is on a phone I bought to repair.
The battery came out of a working i777 that had cm7/cm10/aocp kitkat.It worked fine on all ROMs flashed.And it was fully charged.
The phone boots fully into os or recovery.Then shuts down.Not boot
looping startup screen.
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Could this problem be brick bug?phone had lock screen before I wiped/reset.not sure what ROM.it was stock from what I could see.
won't boot into download mode.will boot into os and recovery but shuts down then goes into bootloop.
any way around this problem?may change out motherboard.
any comments or threads to check would be a help.thnx
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If you haven't seen it, here is the list of ways to get into download mode:
1. With the phone off and connected to the computer via USB cable, and battery installed, hold all three buttons, vol- vol+ pwr.
2. With the phone off and battery installed, hold vol- and vol+ (but not pwr) while plugging in the USB cable.
3. With the phone off and battery installed, hold vol- (but not vol+ or pwr) while plugging in the USB cable.
4. Attempt each of the above three options with the battery removed from the phone. The computer will supply the power to the phone.
5. Use Android Debug Bridge (adb) which will only work if USB debugging has been already turned on in Developer Options, since you can't boot into the system to turn it on. With the battery installed and the phone connected to the pc via USB cable, use the command "adb reboot download".
6. Use a USB jig. With the battery installed insert the USB jig into the USB connector of the phone. Some have reported that this method works when no other method would work.
It's strange that you can boot into recovery and not into download, so try all of these to see if you can get download mode some way.
I suppose it is possible that there is eMMC memory damage, but it would have to be only a very small segment of the memory for your symptoms. I'd be inclined to think the problem is not damaged memory, but I don't remember seeing those exact symptoms.

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Thnx for reply.I've tried all of the button methods.the jig I have has worked on several captivates and 4 other i777.but no luck with this phone.I tried it on my Dailey phone and it goes to download.so jig is good.I haven't done adb yet.will try that next.if that doesn't work,I have a parts phone that still has a motherboard.just hate not to be able to figure out problem.thnx again

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Good news.as I stated in original post,this is a used phone I bought to repair.it had a cracked screen and was a little beat up.so I replaced screen and changed charge port.the bootloop continues but it will now go into download.at least now I can reflash and finish rehab.not sure which part allowed me to get to download mode,I would assume it was charge port.just goes to show that it isn't always 1 big issue.could be several smaller ones.thnx again
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OK.I've changed screen,charge port.got it into DL mode.flashed "back to stock w/root.
ITS STILL BOOTLOOPING.goes fully into os or recovery for about 10 to 12 seconds then shuts down and then loops.what am I missing?
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Could a bad power button cause this problem?anyway to check besides replace part?
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rbb1robert said:
Could a bad power button cause this problem?anyway to check besides replace part?
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A bad power button can cause continuous or spontaneous rebooting while using the stock firmware. I don't know of a method to check that, without simply replacing the switch.

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Is that switch replaceable or is it more feasible to replace motherboard?I can't tell if its soldered or plug in.
Can u direct me to a thread or website to find out more.thnx
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rbb1robert said:
Is that switch replaceable or is it more feasible to replace motherboard?I can't tell if its soldered or plug in.
Can u direct me to a thread or website to find out more.thnx
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It is not replaceable without purchasing expensive specialized hot air soldering equipment. I use a professional Hakko soldering station and I would not attempt it. The button, which is relatively small, must be de-soldered and replaced. It is so small that it does not even have leads, just soldering pads. You can watch a Youtube video of a technician replacing the power button on a T-Mobile S2.
A failed power button will not function at all. The most normal symptom is that the phone will spontaneously boot up when the battery is inserted. But as Cyril says, a failing power button can cause other symptoms.

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Thnx to both of u for replies.
OK,where I'm at now.I used odin3 kk6 w/root.it worked!no more loop.I had used odin3 uch7 w/root.I've used that countless times with no trouble.don't know what happened this time.
I Odin dd kernel for recovery.flashed cm 7.2,then cm 10.1(upgrade recovery).i now have AOCP 7.2 kk.everything seems stable.I also did the superuser update before kk flash.
The only glitch there is that the dreaded yellow triangle(1900 ROM) is now there.it showed up after first flash with uch7(odin3).didn't go away after kk6(odin3).thought it would go away going back to stock?
oh well,that's for another day.thnx agin:thumbup:
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I'm having trouble getting rid of the yellow triangle.jig doesn't work.have flashed back to uchk7/root and kk6.neither one resets counter.maybe wrong bootloader?if I reflash i777 uchk7 secondary boot loader,will that allow jig to work?if so, is there a thread I can read up on?I read return to store/stock thread.need more info on flashing bootloaders.I know that's not the safest thing to do.
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To get rid of the triangle, you'll need to return to stock, then use the correct root/kernel method to avoid tripping the custom-binary monitor.
I suggest the latest stock distribution ( i777UCMD8 ) which can be found in the download repository (see creepyncrawly's sig).
Summary of the process:
Create a nandroid of your desired setup
Install stock android Firmware (via desktop Odin)
Install and use Framaroot (for root access)
Install mobile odin (and the i777 flash kernel)
Install custom kernel (via mobile Odin)
Restore nandroid (via custom kernel)
This process has been further detailed in another thread...
http://forum.xda-developers.com/gal...to-restore-deleted-file-t2827622/post54521059
rbb1robert said:
I'm having trouble getting rid of the yellow triangle.jig doesn't work.have flashed back to uchk7/root and kk6.neither one resets counter.maybe wrong bootloader?if I reflash i777 uchk7 secondary boot loader,will that allow jig to work?if so, is there a thread I can read up on?I read return to store/stock thread.need more info on flashing bootloaders.I know that's not the safest thing to do.
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rbb1robert said:
I'm having trouble getting rid of the yellow triangle.jig doesn't work.have flashed back to uchk7/root and kk6.neither one resets counter.maybe wrong bootloader?if I reflash i777 uchk7 secondary boot loader,will that allow jig to work?if so, is there a thread I can read up on?I read return to store/stock thread.need more info on flashing bootloaders.I know that's not the safest thing to do.
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Flashing the stock kernel (any version, Gingerbread to Jelly Bean,) will remove the yellow triangle boot screen. But flashing the stock kernel will not reset the flash counter. Using the jig will also not reset the flash counter. To reset the flash counter, you must use the Triangle Away application by Chainfire. I think that it only works when you have Ice Cream Sandwich installed on the phone, and you may need to use an earlier version. But does it really matter? It doesn't seem worth the trouble to me, since the phone is long out of warranty.

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I will be selling phone after I'm finished repairing.That is why ID like to get triangle gone.
I flashed older version of bootloader and that seemed to work.It allowed jig to work.
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