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Recovering a Bricked UM3


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Copied from someone else - I didn't write 99% of what is below but I think it's very useful - especially if you are messing with json files on your UM3 and it stops booting. you'll find a recovery im

sweet, big thank you for sharing.    I bricked my machine whilst adjusting the files for the Bondtech set up.     used the win32diskimager and followed your directions and boom bac

You missed the first post in this thread. It has a link to a recovery image which I believe is still the 4.3.3 version.   Here is the UM3 v4.3.3 recovery direct link: https://software.ultima

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Posted · Recovering a Bricked UM3

Hello, I have removed the file from your comment because first of all it seemed to be broken, and secondly; we rather not have these documents camping around here on the forums. They can become outdated and people could try to fix their firmware with old instructions, making their situation perhaps even worse. Updated instructions are never hard to come by if you ask the official source, and would eliminate the risk of outdated information quite significantly if not entirely. 

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    Posted · Recovering a Bricked UM3

    You are my heros gr5 and CarloK!

     

    Bricked my UM3 caused by an faulty patch by Bondtech for Bondtech QR feeder.

    Um3 looped at startup and never finished booting.

     

    File recovery-5.2.1120190503.img provided by CarloK brougt my UM3 back to life.

    After Wifi-Setup another update was done by Air.

    Everything fine now, also afterwards putty patch for Bondtech QR extruder Steps and speed.

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    Posted · Recovering a Bricked UM3

    Great to hear the link to the recovery image helped you out. I updated the post to link to the latest 5.2.16 image.

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    Posted · Recovering a Bricked UM3

    Sometimes the unbricking procedure goes wrong - I've run into a few people who had some damage to the flash memory on their S5 (and this should work for S3/S5/UM3).  It was serious enough that they were told to buy a new processor board and for the S5 that's quite expensive.  So instead we were able to repair the flash memory (diagnose issue, repartition, reformat internal flash memory) such that then we could do the recovery image from Ultimaker.

     

    The procedure is complicated and was a lot of work to write it up.  The first time it took me maybe 40 hours!  Now that I understand everything most people can do it in an hour or three.  Here is my lengthy writeup:

    http://gr5.org/unbricking/

     

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