1. Adikirak

    OP Adikirak Member
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    Initially, I apologize for my English. I'm using google translator.

    Well I installed an Sx core on an Arista V1 Switch.
    When trying to perform the NAND backup procedure when it reaches 20%, it accused the error 00fffd4e by the Sx OS System, however the backup of boot0, boot1, was done successfully.
    In several attempts, I managed to backup the sys partition of that same Switch, but when trying to backup the user in 12% it gave the same error.
    I swapped and tried several microSD cards in both Fat32 and Exfat.
    I changed the microSD module, I changed the modchip and the problem continued.
    I even tested the backup by Hekate itself using SX OS (Options> payloads) and the errors appeared in the same place, in the case of Hekate the error was 00BEE000.
    A few moments ago I tried to format the system, after about 2 hours in about 39% the Switch system gives the error 2002-3537 and when pressing the power button, the switch does not return to life.
    The Sx core flashes blue and then a light blue tint, which means that the emmc module has not been found.

    I need more information on how to proceed.
    I have already tested inject in another emmc module the backup that I have, but without success, when trying to start the system or perform a hardreset the switch presents me with an error 2002-4686.

    Is there a tool or something I can do like 3ds?
    I speak of the Ctrnand process.
    If anyone has tips or more information, I thank you from the heart.
    Below are some images of the problems identified.
     

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  2. ps786

    ps786 Member
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    So you were able to at least start the nand backup previously but now NS wouldn’t even load pass green led?

    How good are your solder points? I have seen issue where people didn’t press flex ribbon when solder. It cause ribbon pull up caps very slightly as solder melted. Especially if you use a fat tip or leave it in contact more than 1~2 seconds at time. Although it looks like a good contact, caps only making intermittent contact to the pcb underneath.
     
    Last edited by ps786, Oct 20, 2020
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  3. Adikirak

    OP Adikirak Member
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    sorry, the pics:
     

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  4. DragarX

    DragarX Advanced Member
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    How are the connection from the emmc to the modchip, and the moddchip to the motherboard emmc connector? There's a good chance these may not be seated correctly, but also a chance that once of these connectors are broken.
     
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  5. Adikirak

    OP Adikirak Member
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    they are functional, I tested another emmc at least the other emmc and the modchip are good, I don't know the original emmc, but I believe it is good, since during formatting, the console was not touched.
     
  6. DragarX

    DragarX Advanced Member
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    The connector on the switch motherboard is usually where the problems lie.
    Your solder points are fine, although usually that would cause issues with booting, not emmc.

    Are you doing a full nand backup or just the system partition?
     
  7. Helidwarf

    Helidwarf Advanced Member
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    I had this issue, its a faulty SD card, mine errored with the same escape code using a kingstone 128GB but worked flawlessly with a Samsung EVO 256GB.

    Try another SD.
     
  8. DragarX

    DragarX Advanced Member
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    I didn't even think of that as I've used the cheapest and slowest cards around and never had issues with backing up anything.
     
  9. Adikirak

    OP Adikirak Member
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    i tested another emmc, and nothing.
    but I will look at the connector of the Switch module.

    it can't be the SD, I tested the backup before on 6 different microsds.
    and always gave the error in the same place, 20%
     
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