1. leo13fernandes's Avatar
    I tried to install both of softwares to roll back to Windows Phone 8.1 from Windows 10 Mobile. The same error appears: "Hash error". Please help me.

    I used Windows 10 and Windows 8.1 PCs to try. And my device is a Lumia 1520.
    Last edited by leo13fernandes; 08-17-2015 at 08:03 PM.
    08-16-2015 10:09 PM
  2. Ed Boland's Avatar
    Make sure the PC you're using is fully updated. Check Windows Update, install all updates, reboot and try again. Also make sure you're using the latest recovery tool.
    Laura Knotek likes this.
    08-17-2015 09:07 AM
  3. leo13fernandes's Avatar
    I've checked those things before try. And downloaded the most recent recovery tool. I just cant understand why it doesnt install. Can you provide me a link to download the tool. I wanna try link some that I dont know.

    Thanks.
    08-17-2015 10:23 AM
  4. garvitmiglani97's Avatar
    I tryed to install both of softwares to roll back to Windows Phone 8.1 from Windows 10 Mobile. The same error appears: "Hash error". Please help me.

    I used Windows 10 and Windows 8.1 PCs to try. And my device is a Lumia 1520.
    Can you provide the screenshot of the error you are getting
    08-17-2015 10:24 AM
  5. Ed Boland's Avatar
    I've checked those things before try. And downloaded the most recent recovery tool. I just cant understand why it doesnt install. Can you provide me a link to download the tool. I wanna try link some that I dont know.

    Thanks.
    Try this link:

    http://download-fds.webapps.microsof...lInstaller.exe
    Laura Knotek likes this.
    08-17-2015 10:27 AM
  6. leo13fernandes's Avatar
    08-17-2015 11:33 AM
  7. leo13fernandes's Avatar
    The upload is take to long so thats my error message: "0X80091007 - O valor do hash no est correto."
    08-17-2015 11:37 AM
  8. leo13fernandes's Avatar
    I tried this link, but it showed me the same error. :(
    08-17-2015 11:38 AM
  9. garvitmiglani97's Avatar
    Try this fix
    Ed Boland likes this.
    08-17-2015 12:23 PM
  10. leo13fernandes's Avatar
    I've tried this too. Didnt solve. :(
    08-17-2015 03:39 PM
  11. BlackGoku's Avatar
    where are windows central people??? This issue should be reported to MS ASAP!!! I updated to the latest build and now i want to go back one build by rollback but now i'm stuck here. This is really stupid. No solutions whatsoever on any website not even ms support.
    08-21-2015 10:43 AM
  12. Guilherme Leme's Avatar
    Hello folks.
    Well, I don't know if it is a problem with their servers, a problem with our computers or with anything else, but today I could install the software and recover my lumia 640 XL.
    I'll try to descript what I did and then we may get into a conclusion
    Well, at first, I downloaded the windows phone recovery tool installer.
    No deal.
    After that, I downloaded the standalone drivers and rebooted the computer in advanced recovery just to disable the digital signature verification for drivers.
    No deal.
    Next, I downloaded the nokia phone recovery tool, which this time installed Microsoft Visual C++ 2010 and some other things and, guess what? Error.
    I don't know what took me to go there and try clicking to run the windows phone tool recovery again and, guess what, IT DID WORK.
    Guys, I don't know what happened here, if it is a miracle or not, but my phone is safe and sound now.
    I think that nokia software installed something that allowed me to do it, don't know, maybe Microsoft did it.
    I hope it can help someone.
    09-17-2015 08:46 AM

Similar Threads

  1. Transferring data from Android to Windows Phone
    By TheJackah in forum General Phone Discussion
    Replies: 2
    Last Post: 10-21-2015, 05:16 AM
  2. Thinking about getting a Lumia 930
    By TheJackah in forum Nokia Lumia 930
    Replies: 40
    Last Post: 09-09-2015, 08:31 AM
  3. Why can't I install windows mobile latest build 100512???
    By Windows Central Question in forum Ask a Question
    Replies: 2
    Last Post: 08-27-2015, 03:19 PM
  4. How long does the battery last on Lumia 930?
    By TheJackah in forum Nokia Lumia 930
    Replies: 1
    Last Post: 08-16-2015, 09:47 PM
  5. Why do I have photos that I haven't seen before showing up on my phone?
    By Windows Central Question in forum General Phone Discussion
    Replies: 0
    Last Post: 08-16-2015, 09:38 PM
LINK TO POST COPIED TO CLIPBOARD