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loop boot quickly

Sorry for my English I will try to explain my problem.
After rooting everything was fine, but when I try to flash stock firmware somethings happen.First problem is that my PC cannot detect the phone with Odin and adb or mass storage I am 100% sure that the problem are not the drivers because I root that phone on the same PC before a week and of course I try everything on a another computer, but without success.
Download mode Odin cannot detect the phone! after many attempts to fix usb problem now the phone cannot boot , only in recovery (loop)after every start it's show recovery with message
Filesystems:
system: rfs
data: rfs
cashe: rfs
maybe system, data and cache files are erased I don't know.
recovery version is 0.1.3.b5
How can I flash stock firmware without PC. For example HTC devices can flash from SD card - Gold card, and PB99IMG.zip (I can't explain very well what I mean sorry)
Maybe the phone is usb bricked !
working..
recovery - only recovery
Download mode Volume Down + power off + camera ) - but cannot connect to PC and Odin.
not working
after flashing new costume ROM - the same thing - reboot to recovery
installed software on pc
android SDK,Kiesmini_1.0.0.10075_1,Samsung PC studio 1.5.1.10064_2,Drivers for spica on (Windows 7 x86)
really I cant find post like this !!! and sorry for my English

If you can go to download mode and phone is not detected, then you have bad drivers or bad usb in PC. Try another PC.

I have 3 pc and 2 cables and the same problem cannot detect. Can I flash new stock firmware without odin ?

godhamer said:
I have 3 pc and 2 cables and the same problem cannot detect. Can I flash new stock firmware without odin ?
Click to expand...
Click to collapse
Have you tried different USB ports, specifically one on the back of the PC?
Sent from a state of Serendipity

I told you that the problem is not drivers.Before week I flash another Samsung without problems. I think the problem is USB brick or something else
I HAVE DRIVERS
Help please !!!!!!!!!!!!!

reinbeau said:
Have you tried different USB ports, specifically one on the back of the PC?
Sent from a state of Serendipity
Click to expand...
Click to collapse
godhamer said:
I told you that the problem is not drivers.Before week I flash another Samsung without problems. I think the problem is USB brick or something else
I HAVE DRIVERS
Help please !!!!!!!!!!!!!
Click to expand...
Click to collapse
Calm down. Did you read what I posted above? I said nothing about drivers. Have you tried other USB ports? Most people find the ports on the back of the CPU work the best, not ones on the front, or on a hub. It does make a difference.

[Q] LG G2 USB Not Recognized

Hi, background is this..
I have a D802-10C G2 that i rooted the stock 4.2.2 rom a while back using the post chinese method. Easy enough, all worked fine. no complaints. A couple of weeks ago i got offered the OTA 4.4 update, this failed due to the root. I then removed the root using the feature in super su. that seems to have worked as no apps or file managers etc could get root access. However, the OTA still wont work.
Now my problem is my phone will no longer be recognized by any operating system, on multiple computers. I have tried many ADB drivers, Windows 7 wont even detect the device, i've used every PC connect mode, USB debugging. However always the same result, it's as if i'm plugging in a blank usb cable into the computer. Nothing at all.
The only thing that does happen when i connect the phone to a computer is the phone starts to trickle charge. There is nothing detected in Device Manager in Windows 7 I've tried connecting in download mode, nothing. I've tried the LG support tool, PC sync. Nothing.
WiFi does connect to the PC suite fine BTW and other than that the phone is working perfectly. I've also tried connecting multiple usb cables on multiple ports.
I haven't been able to find a single case of the same problem in the week or so i've been looking. Hoping someone can help, i'm thinking i may have soft bricked my phone. I really do not think this is a driver issue.
Any help would be great. cheers
Paul

+1
i have the same problem plz help

cambies said:
Hi, background is this..
I have a D802-10C G2 that i rooted the stock 4.2.2 rom a while back using the post chinese method. Easy enough, all worked fine. no complaints. A couple of weeks ago i got offered the OTA 4.4 update, this failed due to the root. I then removed the root using the feature in super su. that seems to have worked as no apps or file managers etc could get root access. However, the OTA still wont work.
Now my problem is my phone will no longer be recognized by any operating system, on multiple computers. I have tried many ADB drivers, Windows 7 wont even detect the device, i've used every PC connect mode, USB debugging. However always the same result, it's as if i'm plugging in a blank usb cable into the computer. Nothing at all.
The only thing that does happen when i connect the phone to a computer is the phone starts to trickle charge. There is nothing detected in Device Manager in Windows 7 I've tried connecting in download mode, nothing. I've tried the LG support tool, PC sync. Nothing.
WiFi does connect to the PC suite fine BTW and other than that the phone is working perfectly. I've also tried connecting multiple usb cables on multiple ports.
I haven't been able to find a single case of the same problem in the week or so i've been looking. Hoping someone can help, i'm thinking i may have soft bricked my phone. I really do not think this is a driver issue.
Any help would be great. cheers
Paul
Click to expand...
Click to collapse
YOu can try checking the device manager or use other USB port on your phone.

buenarc said:
YOu can try checking the device manager or use other USB port on your phone.
Click to expand...
Click to collapse
The problem is not like the usual ones you will see about "computer not being able to see device" I don't think it's a driver or software issue, or if it is it's unlike any i have found in the weeks i've been searching the net for a solution. Here's why....
When i connect the phone to Windows 7 and 8 ( on 3 different computers) No hardware is detected, nothing in the Device Manager, no yellow question marks indicating 'Unknown Hardware'. Nothing, all it does is start trickle charging.
Now even with no ADB, or any driver at all installed, the computer should still detect the phone. Mine does not.
The same thing happens using OSX and Linux Mint 16 (again multiple computers) No devices or mounted or volumes shown at all. Linux terminal command "$ lsusb" does not list my hardware.
This is why i'm pretty much convinced that there is something wrong with the USB port on the phone. Because, if Linux can't see it then surely it's a hardware problem right?
The only other thing i can think of is, i have messed up the phones firmware while trying to unroot it? but only because the timing of all this is just too uncanny.
I think i'll have to suck it up and admit defeat here. Funny thing is the phone works perfectly and charges fine.
Stuck on 4.2 , with no ADB functionality. Perhaps i'll sell it cheap to someone who doesn't care.
Cheers for the reply mate.

Same problem here!
Only my G2 is not rooted, it is still on factory OS and recently updated to 4.4.2.
I have tried on several computers, different ports and no help.
On the first connection to a PC not connected before windows reports "USB device not recognized" problem.
After that every time I connect the phone to the same computer the phone itself only recognizes that it is using USB charging mode, it does not recognize the computer connection (known by the USB ison on android system tray) even with "Ask upon connection option checked".
Even when I manualy change the Android mode in Settings --> PC Connection from MTP to PTP or even LG software, nothing happens.
Definetly there seems to be a problem with the phone, but I don't beleive it's a software but a firmware problem.
Please help if anyone knows what to do.

same thing happened after installing T-mobile rom thrugh twrp. but my device boots into fastboot and i tryed falshing :
laf.img, boot.img, aboot.img, recovery.img, laf.img
but after reboot my LS980 dissapear from device manager and stucked on LG logo.
Dont know what to do now.

I'm no expert, but given there are a lot of them here and none have weighed in on this with any ideas for a fix, i'm going to assume it's a hardware problem.
Anyone else agree? Hardware problem not software?
Cheers

I guess that you already wiped everything right? Apart from that, i'll suggest you to go to some tech supp and ask them if they can verify that each pin of the micro usb is properly working.
Sorry for my english, hope it helps!
Sent from my LG-D802 using XDA Free mobile app

I will try to check the connector although i dont think that it is a hardware issue.
BTW I can enter the download mode after flashing the mentioned partitions and i can also enter the stock LG recovery but when i do the factory reset it keeps showing Factory reset processing ... for ever

It has happened to me the same thing :crying:, and is a problem with the boot.img, if by chance your G2 version 4.4.2 and the the 4.2.2 boot.img, goodbye.
The only solution is to take it to repair a service official, there will change you the card, with the consequent change of IMEI.quent change of IMEI.

Homero2 said:
It has happened to me the same thing :crying:, and is a problem with the boot.img, if by chance your G2 version 4.4.2 and the the 4.2.2 boot.img, goodbye.
The only solution is to take it to repair a service official, there will change you the card, with the consequent change of IMEI.quent change of IMEI.
Click to expand...
Click to collapse
where are you going to repair your G2?
and how much have you paid the repair?
THANKS

Any fix for this guys i have same problem!

Here I'm getting the yellow !, any suggestion?

Sirs, I flashed the baseband (https://www.androidfilehost.com/?w=files&flid=12880) then it got working back.

solved for me
I have some kinds of that problem, let try:
Settings -> General -> PC Connection -> Select USB connection method -> Media device (MTP) (or whatever)

Got this same issue after flashing cloudy g3 rom. Then later flashing dirty unicorns, which requires jelly bean baseband. But even restoring g3 and 24a baseband, still doesn't work. No pc tethering and no on the go usb. My usb port is basically charge only.
---------- Post added at 03:58 PM ---------- Previous post was at 03:56 PM ----------
Everything else works fine...I actually never even noticed this bc I never tether to pc. But now I have to bc I want flask kdz

Help me please
someone have a solution to this problem?
My Lg G2 D803 still on boot loop (LG logo) and thats all ... no usb connection , reset factory doesnt work ...
HELP PLEASE ...
Thank you

Anyone has an idea how to fix this problem?

same problem
I have a LG G2 . recently updated from vs98027a to vs98039a 5.0 lollipop. Since the update my computer won't recognize my device in download mode and I don't have superuser ppermissions. Help plz

I also have the same problem.
It happened when I tried to backup info through LG PC Suite: the phone disconnected during the process, and now it's not recognized by any PC (http://forum.xda-developers.com/lg-g2/help/lg-g2-recognized-windows-backup-t3155323).
Also found a description of the same problem here: https://www.reddit.com/r/lgg2/comments/2urpnw/lg_g2_usb_only_charging_not_recognized_by_pc/ - no solutions, too.
Did anyone manage to fix this?

Please help, s4 sgh i337m brick!!!

Hi there !!!,windows doesn't recognize my s4 i337m in download mode (code 29), when i was flashing (stock canada 5.0.2) my cousin unplugged the cable by mistake, now i can go into download mode but widows 7 doesnt recognize anymore (tried different pcs and cables , the same), did it damage the usb port? or is hardbricked?? what can i do??? please help!!

I'm no expert on this, but you can try taking out battery. Hold power button to discharge hardware and put battery back in and see if it works. You can also try factory reset & wipe cache from recovery (Vol Up + Home + Power) and try again.
Your phone at least goes to Download mode so that's good sign I guess. You're using ODIN to flash 5.0.2, right?
Wait more experienced person to answer, though.

xymic said:
I'm no expert on this, but you can try taking out battery. Hold power button to discharge hardware and put battery back in and see if it works. You can also try factory reset & wipe cache from recovery (Vol Up + Home + Power) and try again.
Your phone at least goes to Download mode so that's good sign I guess. You're using ODIN to flash 5.0.2, right?
Wait more experienced person to answer, though.
Click to expand...
Click to collapse
Thanks bro, but i did what u said and it's still not working, the problem here is that windows does not recognize my s4 (usb port: unknown device, code 29) , yes i'm using odin to flash, but i can't flash until my device be recognized, that's why i need to know if my device's usb port is damaged?

maomloco said:
Thanks bro, but i did what u said and it's still not working, the problem here is that windows does not recognize my s4 (usb port: unknown device, code 29) , yes i'm using odin to flash, but i can't flash until my device be recognized, that's why i need to know if my device's usb port is damaged?
Click to expand...
Click to collapse
It looks like the PC does recognize something is connected; it just doesn't know what the device is. This makes me think USB port is fine otherwise PC wouldn't recognize anything AT ALL. Does the phone still charge?
You can try the 3 methods here. I know it says for Code 28, but it will reinstall drivers for usb ports. Restart and see if phone is detected.
If it's still not detected, remove Samsung drivers, Kies, or anything related to Samsung phone. Restart and install Samsung USB drivers again. Restart again and see if phone is detected.

bro i'm afraid it did not work, perhaps replacing usb port on my device? or the whole flex?
aditional data: my nephew unplugged the usb cable by mistake while i was flashing canada stock 5.0.2 , obviously odin "failed" , but after that , windows 7 does not recognize my device anymore. i can still go into download mode.

xymic said:
It looks like the PC does recognize something is connected; it just doesn't know what the device is. This makes me think USB port is fine otherwise PC wouldn't recognize anything AT ALL. Does the phone still charge?
You can try the 3 methods . I know it says for Code 28, but it will reinstall drivers for usb ports. Restart and see if phone is detected.
If it's still not detected, remove Samsung drivers, Kies, or anything related to Samsung phone. Restart and install again. Restart again and see if phone is detected.
Click to expand...
Click to collapse
bro i'm afraid it did not work, perhaps replacing usb port on my device? or the whole flex?
aditional data: my nephew unplugged the usb cable by mistake while i was flashing canada stock 5.0.2 , obviously odin "failed" , but after that , windows 7 does not recognize my device anymore. i can still go into download mode.

maomloco said:
bro i'm afraid it did not work, perhaps replacing usb port on my device? or the whole flex?
aditional data: my nephew unplugged the usb cable by mistake while i was flashing canada stock 5.0.2 , obviously odin "failed" , but after that , windows 7 does not recognize my device anymore. i can still go into download mode.
Click to expand...
Click to collapse
Well, I'm stumped too now, man. You can try the driver thing I said on another computer. I don't know any other things you can try.
If you can charge your phone, your usb port probably works fine. The firmware got corrupted, causing this problem most likely.

solved!!
xymic said:
Well, I'm stumped too now, man. You can try the driver thing I said on another computer. I don't know any other things you can try.
If you can charge your phone, your usb port probably works fine. The firmware got corrupted, causing this problem most likely.
Click to expand...
Click to collapse
bro, my friend flexed it with medusa box for 20 dollars, my phone is fully functional now!! anyway thank u so much.

MTP, ADB, PC wont see them, ODIN pc see my phone. Also OTG my phone recognise it.

Hi all.
I need help.
My pc wont recognise my phone anymore. deleted all the drivers and everything.
ADB and USB not working.
But when i put my phone into download mode. my pc recognise my phone again.
But when booted my pc wont see my phone.
My phone only say's he's connected to a charger..
i already checked *#0808#
MTP + ADB is checked.
Tried this on other PC's and same error..
Think something is wrong with mounting data or something?
How did this happen,
i installed twrp recovery + crisscross mod.
After that MTP + adb isnt working anymore..
Flashed stock back on the phone but no results..
OTG is working great on the phone.
Please help
EDIT::
Problem is solved.
I drained the battery to 0%.
Didn't charge for an hour.
Connected phone to PC via USB, in Download mode.
Then flashed Philz recovery.
Reboot to system, and problem's were fixed.

Yes, I have the same problem. G920P
Teardown check after I found the USB interface power supply is normal!
The '1.9 v from The then measured normal tail current 5 v
I ruled out the power supply and USB interface problems
Has not ruled out the mainboard problem

The bodhi said:
Yes, I have the same problem. G920P
Teardown check after I found the USB interface power supply is normal!
The '1.9 v from The then measured normal tail current 5 v
I ruled out the power supply and USB interface problems
Has not ruled out the mainboard problem
Click to expand...
Click to collapse
you encountered the same problem after rooting?

Problem solved!

jer0o1 said:
you encountered the same problem after rooting?
Click to expand...
Click to collapse
NO. I tried all the way to still can't normal computer connection

USB Device not recognized on Windows

I have a dilemma. This morning my usb was working fine but I needed to get back to stock and unrooted. I flashed the system.img from the NDR90X factory image and wiped my data (not userdata however because I didn't want to lose everything) the phone booted up just fine and operates fine, other then it doesn't mount on my pc anymore. fastboot and adb do not work for me either. I tried mounting on both windows and linux, I tried using another computer, and I have tried mounting through the recovery. none of these have worked. I cant try going back to complete stock because fastboot is not recognizing the device either. the phone still charges fine with no problems. But I still am getting the feeling that maybe the usb port has malfunction. I was hoping that maybe someone could help me with this problem and reaching a solution. I don't know if I can contact google about this problem because my device cannot be returned to completely stock.
I forgot to mention that after flashing the stock system.img I also flashed TWRP, and since then I am back on a custom rom to see if maybe that would fix my problem. However it still persists.
I have uploaded a picture showing what error message I am getting on windows.

Reinstall the USB drivers

hd-renegade said:
Reinstall the USB drivers
Click to expand...
Click to collapse
Turns out it was the USB that doesn't work. When I got home I tried another USB that I have and it works fine.
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