1. umby75fg's Avatar
    Hi, my phone is H990DS and is stuck in Firmware Update screen with error 910K B50.
    I tried to flash winth LG UP the H990ds10c_00_OPEN_SG_DS_OP_1214.kdz firmware creating proper LG.dll file but my phone doesn't restart and it is stuck on Firmware Update screen.
    How can I fix my phone?
    Do you know what is my problem?
    06-09-2018 03:10 PM
  2. AtTheHop's Avatar
    Ry pulling the battery for 30 seconds, reinstall it and try to fire it up.
    umby75fg likes this.
    06-10-2018 05:57 AM
  3. flyingkytez's Avatar
    Hi, my phone is H990DS and is stuck in Firmware Update screen with error 910K B50.
    I tried to flash winth LG UP the H990ds10c_00_OPEN_SG_DS_OP_1214.kdz firmware creating proper LG.dll file but my phone doesn't restart and it is stuck on Firmware Update screen.
    How can I fix my phone?
    Do you know what is my problem?
    You soft bricked it. It's still fixable. Try to go to Android recovery mode and clear the cache and do a factory reset. If that does not work, you will have to reflash the OS... you'll have to download the correct firmware for your model, go to Android boot mode, and then use ADB sideload to reinstall the firmware OS. Check or ask XDA for help, they specialize in that over there.
    umby75fg likes this.
    06-10-2018 12:42 PM
  4. dlcpa's Avatar
    wait wait. pull the battery and then put it back close it up, put the power cord in and then boot It Up. I have the exact same problem and it's got to be plugged in because I think it's a precaution so that on a firmware update it's big trouble if the power goes out so they force you to have constant power.

    You may have to call your carrier and ask them to push the firmware upgrade again cuz if it went away and it comes back it may come back when your phone's not plugged in.
    umby75fg likes this.
    06-12-2018 03:38 PM
  5. umby75fg's Avatar
    Ry pulling the battery for 30 seconds, reinstall it and try to fire it up.
    I've already done it many times but it us stuck on that screen..

    You soft bricked it. It's still fixable. Try to go to Android recovery mode and clear the cache and do a factory reset. If that does not work, you will have to reflash the OS... you'll have to download the correct firmware for your model, go to Android boot mode, and then use ADB sideload to reinstall the firmware OS. Check or ask XDA for help, they specialize in that over there.
    I've already done factory reset but the phone is stuck on the same screen.
    I'm not sure if the phone also has got the factory reset command.
    I've not tried the ADB mode yet and I hope to fix my issue..

    wait wait. pull the battery and then put it back close it up, put the power cord in and then boot It Up. I have the exact same problem and it's got to be plugged in because I think it's a precaution so that on a firmware update it's big trouble if the power goes out so they force you to have constant power.

    You may have to call your carrier and ask them to push the firmware upgrade again cuz if it went away and it comes back it may come back when your phone's not plugged in.
    You mean that does the phone need to get a quite charge to boot regurarly and I have to let the phone gets the charge for an enough time?
    I don't remember fine but as I know I did it..
    My carrier is a problem because I need to ship the phone far for repairing...
    06-13-2018 07:10 AM
  6. Kevin Roberts3's Avatar
    My LG v20 did the same thing found the solution get your charge cable a little wet on the end which plugs into your phone plug it in your phone bam its fixed crazy I know but it works
    umby75fg likes this.
    10-05-2018 03:26 PM
  7. tickerguy's Avatar
    Download LG's desktop software; it can go grab the full system image and reflash it.
    Laura Knotek, tube517 and umby75fg like this.
    10-05-2018 09:04 PM
  8. flyingkytez's Avatar
    My LG v20 did the same thing found the solution get your charge cable a little wet on the end which plugs into your phone plug it in your phone bam its fixed crazy I know but it works
    I don't recommend doing that.. electrocution risk and fire
    10-06-2018 04:04 PM
  9. flyingkytez's Avatar
    I've already done it many times but it us stuck on that screen..



    I've already done factory reset but the phone is stuck on the same screen.
    I'm not sure if the phone also has got the factory reset command.
    I've not tried the ADB mode yet and I hope to fix my issue..



    You mean that does the phone need to get a quite charge to boot regurarly and I have to let the phone gets the charge for an enough time?
    I don't remember fine but as I know I did it..
    My carrier is a problem because I need to ship the phone far for repairing...
    It's totally fixable, I've done this before many times. There was a software corruption. You need to go into recovery mode power button + volume up, then press volume down. Then click recovery mode then you can go on your computer and install the software you downloaded online, using the command prompt. You will need to go on XDA forums for help and full instructions.
    umby75fg likes this.
    10-06-2018 04:06 PM
  10. umby75fg's Avatar
    My LG v20 did the same thing found the solution get your charge cable a little wet on the end which plugs into your phone plug it in your phone bam its fixed crazy I know but it works
    As you said I sprayed perfume phone plug and it booted with my configuration but I got a lot of errors because I tried to backup all my data but I couldn't do it.
    Why if do I spray liquid on phone plug it starts?
    Probably is a hardware issue...

    Download LG's desktop software; it can go grab the full system image and reflash it.
    I don't remember if I used that software but I remember I tried LGUP, Lg Mobile support and another one.
    Maybe as LG's desktop software do you mean Lg Pc Suite?
    If I remember fine I've already done it..

    I don't recommend doing that.. electrocution risk and fire
    But why the system starts?

    Did you encounter the same issue?
    I'd like to fix it.
    I wrote something on Xda forum but I didn't fix it and I bought another phone.
    You wrote that I need to flash firmware with commands and using the software I downliaded online. Which one? Probably you mean through Ads commands...
    10-14-2018 03:11 AM

Similar Threads

  1. LG G2 Guest Mode - can receive calls but not make outgoing phone calls
    By Android Central Question in forum Ask a Question
    Replies: 3
    Last Post: 06-11-2018, 07:15 PM
  2. Screen is becoming purple and its not working
    By Android Central Question in forum Ask a Question
    Replies: 1
    Last Post: 06-09-2018, 02:14 PM
  3. need help with firmware on box
    By Android Central Question in forum Ask a Question
    Replies: 0
    Last Post: 06-09-2018, 02:00 PM
  4. How do i obtain the stock firmware for the cricket lg harmony(lgm257)
    By Android Central Question in forum Ask a Question
    Replies: 0
    Last Post: 06-09-2018, 01:29 PM
  5. Update keyboard problem galaxy s8
    By Android Central Question in forum Samsung Galaxy S8 & S8+
    Replies: 0
    Last Post: 06-09-2018, 01:22 PM
LINK TO POST COPIED TO CLIPBOARD