[Q] Can't get into download mode - AT&T Samsung Galaxy S II SGH-I777

So I have been trying to root my phone and have been following the directions posted on the forums here, the problem is, no matter what I try I can't get it to download mode. I've tried volume up + volume down while plugging in USB, tried volume down + power button while plugging in usb, and while not plugging in usb. Nothing gets it into download mode. All the buttons and the phone works completely normally outside of this, and I can get it into 3e recovery mode easily enough. Any help?

Take out the battery from the back to ensure your phone is completely off, then put the battery back in. Now hold down on both the Up and Down Volume buttons and plug the USB coming from your PC into your SGS2. Once you see a warning screen let go of the volume buttons. Hit the Up Volume button to continue into download mode.
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http://forum.xda-developers.com/showthread.php?t=1288112

I tried that, and did it again just now with taking the battery out. It doesn't work, after like 5 seconds of having the usb plugged in it just starts charging the phone and brings up the battery filling up graphic...

Never mind, maybe this should have been obvious, but I was trying to do this with a generic microusb cord made by At&t (it was what i had closest at hand) and it wasn't working. I just tried it with the microusb cord that came with my phone (samsung made) and I got into download mode right away...go figure.

Interesting...I wouldn't have thought it mattered. Glad you figured it out.

justlaxin13 said:
Never mind, maybe this should have been obvious, but I was trying to do this with a generic microusb cord made by At&t (it was what i had closest at hand) and it wasn't working. I just tried it with the microusb cord that came with my phone (samsung made) and I got into download mode right away...go figure.
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I think some of the microusb cords AT&T sells are specifically designed for charging-only - they short D+ and D- together to force the phone into AC Charger mode.
Which of course makes them useless for data...
(The stock MicroUSB cord is OK - but additional cords can be charger-only.)

Related

Is anyone having the battery with question mark problem?

I may have just thought of something. Just need to know if there's anyone that's able and willing to try it out.
Well if anyone reads this, can you get the usb prompt by holding volume up and power?
Cant get to USB mode. It just powers up with the battery and question mark, If you power up with unit plugged it you get a flashing home button.
Cant get anything to work
gavie said:
Cant get to USB mode. It just powers up with the battery and question mark, If you power up with unit plugged it you get a flashing home button.
Cant get anything to work
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You cannot go into USB mode with a flat battery make sure its charged up first, plug in the charger or put on the touchstone and leave to charge overnight do not turn on until charged then to put into USB mode unplug the cable then power +volume up when USB symbol shows then plug in the USB cable
rr5678 said:
I may have just thought of something. Just need to know if there's anyone that's able and willing to try it out.
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This is a know problem with all WebOS products. I experienced it with my old Palm Pre Plus. The only solution I know of is to replace the battery.
Sent from my Galaxy Nexus using Tapatalk 2

Soft brick and no USB connectivity

I managed to soft brick my wife's Vibrant while trying to put it back to stock ROM: basically I get the "Phone -- Yellow exclmation -- PC". The volume up, down and power combo doesn't work.
In addition, to make things worse, if I plug it into the PC it gets power but the PC doesn't recognize the USB, so I can't use any type of soft unbrick software.
Should I give a try to the USB jig to get into download mode or, do you guys think the USB port is faulty... I know it's kind of hard to know, but I'm primarily curious to see if anyone got in a similar situation with soft brick and no USB connectivity and was able to solve it with the jig...
Thanks!!!!
ZetaTre said:
I managed to soft brick my wife's Vibrant while trying to put it back to stock ROM: basically I get the "Phone -- Yellow exclmation -- PC". The volume up, down and power combo doesn't work.
In addition, to make things worse, if I plug it into the PC it gets power but the PC doesn't recognize the USB, so I can't use any type of soft unbrick software.
Should I give a try to the USB jig to get into download mode or, do you guys think the USB port is faulty... I know it's kind of hard to know, but I'm primarily curious to see if anyone got in a similar situation with soft brick and no USB connectivity and was able to solve it with the jig...
Thanks!!!!
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I'm not sure ajig would help you but its good to have ajig laying around just in case things go bad. The jig will get you into download mode but if your usb cable/usb port is bad then you still can't connect to your pc to use odin. Sounds like you need a new usb cable or you need to clean your usb port. Have you tried cleaning your phones usb port with isopropyl alcohol and a Qtip? We had a member fix his phone this way just yesterday. If that doesn't work and a tmobile usb cable doesn't work then you might have a faulty usb port. Tmobile has a 30 day money back guarantee on the usb cable so try that if you haven't already. If you end up exhausting all options then I recommend www.mobiletechvideos.com to replace your usb port, plenty of folks have had success with them in the past. Just so you know, the only usb cable that works for me is the one from the tmobile store. I'm not sure why but I have three other cables that work fine on my friends vibrant but dont even do anything at all when plugged in to my phone (not even charge). Let us know what ends up being the fix, good luck.
Sent from my SGH-T959 using xda premium
I gave it a try and cleaned out the USB port with some electronic contact cleaner, but that didn't help. I've also tried 4 cables and 2 PC with no differences.
I'll try out the JIG and see if that fixes it if not I'll decide what to do:quite frankly I would unbrick it and bring it back to the stock firmware just to turn around and put it on eBay, so I'm not quite sure it's worth the effort... But since I've already ordered the JIG I'll give that one a try...
Good luck. I suggest you mod your phone like mobile tech videos (tried acronyming it to MTV but you know) did to make it unbrickable.
Sent from my SGH-T959 using xda app-developers app
ZetaTre said:
I managed to soft brick my wife's Vibrant while trying to put it back to stock ROM: basically I get the "Phone -- Yellow exclmation -- PC". The volume up, down and power combo doesn't work.
In addition, to make things worse, if I plug it into the PC it gets power but the PC doesn't recognize the USB, so I can't use any type of soft unbrick software.
Should I give a try to the USB jig to get into download mode or, do you guys think the USB port is faulty... I know it's kind of hard to know, but I'm primarily curious to see if anyone got in a similar situation with soft brick and no USB connectivity and was able to solve it with the jig...
Thanks!!!!
Click to expand...
Click to collapse
It gets power.does it means your wife's ph is charging??try charging battery with external charger..and connect to pc...
Sent from my MT11i using xda app-developers app
If you happen to have Amazon Prime, you can get a jig from Amazon in your hands with next day delivery for $8 (3.99 for the jig and 3.99 for the delivery).
Now that said, if you happend to have flashed the GB bootloader at some point, rememer that the download mode is now accessed by the volume up, instead of both up and down. It's definitely worth giving this a try:
- take out the battery
- plug in the usb to the phone and your PC
- hold the power up button and insert the battery. It should go right into download mode
I actually did have a GB room installed... I'll give it a try tonight: thanks for the heads up!!!!
Just noticed that you said you already ordered the jig so NM about the amazon suggestion. I've been in the situation with the exclamation point and thought mine was bricked. I ordered the jig on Amazon and then finally tried what I detailed above and got in download mode. I could not get in DL mode no matter what else I tried, including just powering up with USB attached and volume up held. I had to do it with the battery being inserted with volume up.
Good luck and remember, the jig may work for the phone, but flowers usually work for the wife.
It was indeed the wrong combo to get it into download mode: using the volume up only and it went right in. The USB connectivity is also solved.
After some back and forth I was able to get CM 7.2 loaded and it works perfectly. Now I just need to solve the dreaded GPS issues of this phone: tonight I'll take it apart and see if bending the antenna connector solves it. It is a August 2010 production so it might as well be.
Other than that CM7.2 works pretty damn good. I already have it on my N1 with no issues. The Vibrant is very much snappier now, particularly if you crank it over to 1.3GHz.
Again thanks a lot for all the help!!!!
A friend had the same problem where it wouldn't go into download mode and would just stay at the phone ! computer screen. It would auto turn on when plugged into usb to this screen so that gave me little hope. What I ended up doing was holding all three buttons and when it turned black let go off power but kept volumes held, it would load back to the exclamation screen and I would hold the power button again, it cycled like this 3 or 4 times, but eventually went back to the download mode and I was able to restore with Odin.

Boot HTC One Max by plugging in charger

Hello, is there a script or a method where I can get my HTC One Max T6 to boot when plugged into the charger? The power connector is broken inside so I have no power or volume button functions. I am running CyanogenMod 12.1 and the phone is rooted, s-off and unlocked.. I know it can be done, because some ROMs I have used in the past caused the phone to boot when the charger is first plugged in. Thanks.
Sorry a bit confused. You mean the USB power connector on your phone is broken ("The power connector is broken inside") but you need to have the phone boot when a USB charger is plugged in the broken USB connector?
Anyway, if the problem is not having power and volume keys function, then I think there are some kernels which has "tap to power" function which you can turn on your phone by specific tapping pattern on the screen. Since I don't change kernel so don't have a link but just search this forum and you shall find some. One Max forum is not too big...
Though you need the USB to be functional enough to deliver power and connect to PC .
lssong99 said:
Sorry a bit confused. You mean the USB power connector on your phone is broken ("The power connector is broken inside") but you need to have the phone boot when a USB charger is plugged in the broken USB connector?
Anyway, if the problem is not having power and volume keys function, then I think there are some kernels which has "tap to power" function which you can turn on your phone by specific tapping pattern on the screen. Since I don't change kernel so don't have a link but just search this forum and you shall find some. One Max forum is not too big...
Though you need the USB to be functional enough to deliver power and connect to PC .
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Thanks, I didn't make it clear, my power and vol buttons ribbon connector is broken internally, so I don't have those functions. The phone USB functions properly. I did have a ROM installed, some time ago, that used to boot the phone into recovery when I plugged in the charger through USB. Annoying at the time, for sure, but I need it now
Again, thanks for your help.
I believe the custom recovery/kernel or the bootloader determines what happens when you plug in the phone. So you would have to flash one that does that.

SGP311 brick - no usb signal at all, no boot, some led blinks...

Hi,
Please, be patient while reading this post, this is a looong explanation of the brick I am facing...
I recently was given a non working XTZ SGP311 and tried to get it back to life. As I have another one SGP311 (this one is perfectly working), I am able to check many things.
I read most of topics about XTZ unbrick but can't find any way to get it back working.
The problem is that I can't have any signal from usb (data or power). I use a genuine Sony USB cable and genuine Sony charging adapter (coming from the working SGP311). The led always stays off.
I tried the different combos as described (vol- and power ; vol+ and power ; vol+ and vol- and power) during 5, 10, 20, 30 seconds (yes, quite complete tests).
I did a cross check of batteries and inside usb connector ribbon (yes, had to open both tablets for that), the working tablet continues to work with the 2 parts coming from the faulty one (battery coming from dead tablet was 0% charged), so the problem is not on the side of the inside usb connector neither on the side of a supposed dead battery. The faulty tablet doesn't boot, even with a fully charged battery inside.
I luckily own a XTZ dock (SGPDS5) that allows to charge without using usb connector (it uses the 2 contacts located on the left side of the tablet). That's the only way to get something...
Soooo, when I put the bricked tablet on its dock, the red led flashes very slowy (say, 1 second off, 1 second on red, and so on).
When I press vol- and power, nothing happens (no matter 5/10/15/20/25 seconds).
When I press vol- and vol+ and power, idem.
When I press vol+ and power : I got the sequence blinks once white led / blinks 3 times white led (after that goes to slow red blinking about if I keep the keys pressed). So not completely dead.
If I unplug it from the dock right after the third white blink, plug the usb cable to the tablet, plug it to my laptop (with emma running, tried with pc companion too), and press vol-, then....nothing happens. Really nothing. No led lit. No detection of anything from the laptop (or device manager as well). It would have been the same if I would have kept it unplugged.
To sum it up, the only thing I can have is 1 or 3 white blinks after having plugged the SGP311 on its docks.
IMO, the trouble comes from a faulty component inside the tablet. Maybe the one that manages the connection from the usb ribbon plug. I checked the tiny plugs inside the tablet (once dismantled and back repacked too), all seems in order.
Your help is welcome !
This is similar to an issue I have it sounds like, you can still flash stock rom by holding power + volume till it blinks 3x then plug USB in and hold volume down immediately.
This gives flash mode, you can use flash tool to put stock rom on with this. The issue happens when it's acting like there's no OS it seems. Problem is mines doing this everytime I flash a custom rom, it's fine with stock aside from **** wifi
Thanks for your help. I tried that yesterday and it did not work.
This may be related to the way of reset I use (but I can't have any other).
As I can't get any white blinking led when connected by the tablet micro-usb port, the one and only way to get the 3 times white blinking led is when the XTZ is on its dock (SGP DS5, power connection only by lateral contacts).
What I tried yesterday was to get the 3 time white blinking led (vol+ and Power), then output the tablet off the dock and connect a usb cable to a laptop running Sony Emma (from micro usb tablet port to usb laptop).
Precision : I kept VOL- pressed when pluging usb cable to laptop.
No result at all. No detection (either Emma nor windows).
Any idea ?
jzk01 said:
Thanks for your help. I tried that yesterday and it did not work.
This may be related to the way of reset I use (but I can't have any other).
As I can't get any white blinking led when connected by the tablet micro-usb port, the one and only way to get the 3 times white blinking led is when the XTZ is on its dock (SGP DS5, power connection only by lateral contacts).
What I tried yesterday was to get the 3 time white blinking led (vol+ and Power), then output the tablet off the dock and connect a usb cable to a laptop running Sony Emma (from micro usb tablet port to usb laptop).
Precision : I kept VOL- pressed when pluging usb cable to laptop.
No result at all. No detection (either Emma nor windows).
Any idea ?
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Click to collapse
let it charge for a night period. Then try to flash again.
Rootk1t said:
let it charge for a night period. Then try to flash again.
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Click to collapse
Thanks for your advice, I appreciate.
But I swapped batteries from the working XTZ to the non-working one and put a (about) 60% charged battery into the bricked XTZ (both batteries are charging when set into the working XTZ). I will try anyway.
The problem is that the non working XTZ does not charge either through usb or through the dock. The only interest of the dock is that this is only situation where I can have the "triple white led blink" (but nothing more).
That's why I need the working XTZ for charging before doing anything with the non working one.
What I could try would be to connect the lateral contacts with wires to the dock in order to keep an access to the usb tablet micro port and connect it to a laptop.
But this may be hairy as this would give 2 ways for power (one by the dock and the other by the USB port), and may produce a short circuit...
Any XTZ power experts around ?
Hello, Did you find a solution to this issue ?
Hello, did you find a solution for this issue ? Look like that I had the same.
jzk01 said:
Thanks for your advice, I appreciate.
But I swapped batteries from the working XTZ to the non-working one and put a (about) 60% charged battery into the bricked XTZ (both batteries are charging when set into the working XTZ). I will try anyway.
The problem is that the non working XTZ does not charge either through usb or through the dock. The only interest of the dock is that this is only situation where I can have the "triple white led blink" (but nothing more).
That's why I need the working XTZ for charging before doing anything with the non working one.
What I could try would be to connect the lateral contacts with wires to the dock in order to keep an access to the usb tablet micro port and connect it to a laptop.
But this may be hairy as this would give 2 ways for power (one by the dock and the other by the USB port), and may produce a short circuit...
Any XTZ power experts around ?
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Canhobix said:
Hello, did you find a solution for this issue ? Look like that I had the same.
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Click to collapse
Well, not a real solution...
I bought a cheap xtz with broken screen and got its working motherboard and put it instead of the other one.I got the lte component too with its antenna and put it into the 1st xtz that was not supposed to have lte.
So now, on one side I have a xtz with faulty motherboard and broken screen, and on the other side a refurbished xtz with LTE !
I like very much this tablet. Very handy, easy to dismantle and easy to swap its components.
The only drawback is no more support for Sony.
Thank you for the answer
So, you are saying that if I replace the motherboard I can fix that ? I'm looking for motherboard on ebay and I found one for $28 usd + shihpping.
Thank you for answering and take care.
jzk01 said:
Well, not a real solution...
I bought a cheap xtz with broken screen and got its working motherboard and put it instead of the other one.I got the lte component too with its antenna and put it into the 1st xtz that was not supposed to have lte.
So now, on one side I have a xtz with faulty motherboard and broken screen, and on the other side a refurbished xtz with LTE !
I like very much this tablet. Very handy, easy to dismantle and easy to swap its components.
The only drawback is no more support for Sony.
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Click to collapse
Canhobix said:
So, you are saying that if I replace the motherboard I can fix that ? I'm looking for motherboard on ebay and I found one for $28 usd + shihpping.
Thank you for answering and take care.
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Click to collapse
Yes. I think this should be good.
Don't care about the exact matching of the product code: as long as it'll be xtz, it'll be good (16 or 32 gb, with or without lte, and any region should match).
Did you opened it already ?
Yes, I opened 2 years ago cuz my son broke the power jack connector then I replaced that twice.
I'm also tech guy, I can replace that, but won't expend more than $50 for a new motherboard. I'm looking on ebay now.
Thank you
jzk01 said:
Yes. I think this should be good.
Don't care about the exact matching of the product code: as long as it'll be xtz, it'll be good (16 or 32 gb, with or without lte, and any region should match).
Did you opened it already ?
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plzzz dont let it be a brick!!!

So i found a usb cable at work so i decided to take it home and use it. When I plugged my tablet in, it seemed a bit loose so I decided not to use it. But when I plugged my original charger, it wouldnt charge....that was 2 days ago and still no charge.
Im pretty sure its bricked because it doesnt turn on, doesnt show its charging...nothing. I guess i just want someone else to tell me that its done for and time throw it away or maybe have someone more knowledgeable repair it..
.
i3am5not8real13 said:
So i found a usb cable at work so i decided to take it home and use it. When I plugged my tablet in, it seemed a bit loose so I decided not to use it. But when I plugged my original charger, it wouldnt charge....that was 2 days ago and still no charge.
Im pretty sure its bricked because it doesnt turn on, doesnt show its charging...nothing. I guess i just want someone else to tell me that its done for and time throw it away or maybe have someone more knowledgeable repair it..
.
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Click to collapse
So what makes you think it's a brick? Is it just a dead battery? Did it boot before? Have you opened it to check the battery connection?
I replaced the USB daughterboard on mine. Like $10 and 15 minutes. Couple screws and ribbon cables
madbat99 said:
So what makes you think it's a brick? Is it just a dead battery? Did it boot before? Have you opened it to check the battery connection?
I replaced the USB daughterboard on mine. Like $10 and 15 minutes. Couple screws and ribbon cables
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Click to collapse
didn't think it was that easy...ill work on that and keep u posted
i3am5not8real13 said:
didn't think it was that easy...ill work on that and keep u posted
Click to expand...
Click to collapse
sorry took so long had to go away for a bit...installed new daughterboard and still nothimg, ill check the connections again
i3am5not8real13 said:
didn't think it was that easy...ill work on that and keep u posted
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Does the white light at the bottom flash when you try to power it on while it charges?
try this:
Plug your N9 into a good 2.4amp output USB brick
hold down the power button
If the led doesn't flash 3 times annoyingly then you are out of luck. I don't know how to fix it. I have a broken N9 and a good one and the broken one has a dead mother board and sounds the same, but I DOUBT a loose USB cord destroyed your tab.
Galaxyninja66 said:
Does the white light at the bottom flash when you try to power it on while it charges?
try this:
Plug your N9 into a good 2.4amp output USB brick
hold down the power button
If the led doesn't flash 3 times annoyingly then you are out of luck. I don't know how to fix it. I have a broken N9 and a good one and the broken one has a dead mother board and sounds the same, but I DOUBT a loose USB cord destroyed your tab.
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Click to collapse
Mine died too, but the led does flash 3 times. Is that a good sign? My USB port began failing and it was getting harder to charge. I left it plugged in over the weekend (forgot about it) and on Monday.... Nothing. But it does flash the led 3 times when I plug it in, sometimes. I probably need to replace the USB board again. Leaving a USB otg stick plugged into it for movie viewing in the truck is what keeps damaging my USB ports.
Update: I finally got it to charge and boot. Just had to hold the cord just right, and plug it into an outlet I have converted to USB next to my couch. New USB daughterboard ordered and on the way.
Try putting it in APX mode and charging it. Plug it into a computer and hold power, vol+, and vol- until the tablet is detected. Leave it overnight, then hold the same button combo for 15 seconds.

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