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FiiO M11-Notice regarding micro SD card compatibility issues involving micro SD slot 1 on FiiO M11

Discussion in 'FiiO' started by FiiO, Apr 12, 2019.
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  1. FiiO
    Attn: Current and prospective FiiO M11 owners

    (Kindly read the following carefully before use):



    Since its release, the FiiO M11 has received positive response from the market. Following the success of the trial sales in China (and small batch of trial sales on FiiO Aliexpress store), we have also received significant feedbacks from early adopters. We will be looking into the feedbacks based on which, we continue to improve the overall performance of the M11 via firmware updates.



    It has come to our attention that amongst the feedback received. There is a case of abnormalities involving a Lexar 512GB micro SD card when used in the micro SD slot 1 on FiiO M11, often resulting in occurrences of write-protection or inability to detect the micro SD.



    [​IMG]



    Following our investigations, please find below our observations on the issue:



    1. The issue as observed occurs only on the micro SD slot 1 on FiiO M11. The issue can be attributed to the high transient current required by the Lexar 512GB micro SD card when operating at high speed, coupled with the occasional interruptions from the micro SD slot 1, often resulting in abnormal operations.



    2. Based on the tests performed by our engineering team and our customers. Micro SD cards from Kingston, Samsung, Sandisk, and Toshiba functioned well without any issue on both the micro SD slot 1 and 2. The team has also performed tests on large capacity (≥128GB) high speed micro SD cards from the respective and found no issues with both the micro SD slot 1 and 2.



    Following consultation with Lexar coupled with further testing and investigation, the engineering team have identified the issue and the solution to the issue.



    1. 512GB micro SD cards are recently introduced on the market, the offering from some of brands requires higher than average transient current when operating at high speed. The Exynos 7872 natively supports only a single external memory expansion, on the M11. The micro SD slot 1 is expanded via a voltage level conversation chip, as such when performing high speed operation on 512GB micro SD cards, abnormalities might occur for brands which requires higher than average transient current.


    2. Based on the above, we are releasing firmware 1.0.3 (*find the download link and instructions at the end of the text), through the lowering of the read/write speed on the micro SD slot 1 to reduce the transient current required, thereby preventing the occurrence of abnormality.



    3. The lowering the read/write speed on the micro SD slot 1, will only result in a slight decrease in the data transfer rate and will not affect any functionality.



    4. If you are using a single micro SD card, it is suggested that the card be inserted in the micro SD slot 2 for optimal performance.



    5. Considering the perforation of high capacity micro SD cards, a single SD card slot should suffice the requirement of most users, moreover, majority of the offerings in the market today also sports of a single SD card slot design. In order to avoid disparity in the data transfer rate causing concerns, we are considering the possibility of removing the dual micro SD card slot design in future batches of the M11.



    6. We would like to apologize for any inconvenience caused, should you require our attention, kindly contact our support team at support@fiio.com for assistance.



    * Download link for FW 1.0.3: >> Click here
    * How to upgrade the M11: >> Click here



    FiiO Electronics Technology Co., Ltd.
     
    FiiO Stay updated on FiiO at their sponsor page on Head-Fi.
     
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    SoundChoice and AN94Master like this.
  2. cidol
    Please find a way to keep both SD card slots, it's the reason I want to get the player.
     
  3. FiiO
    Dear friend,

    Thanks for the feedback. We will record and report to the engineer about that.

    Best regards
     
    FiiO Stay updated on FiiO at their sponsor page on Head-Fi.
     
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  4. piscattore
    Hi,

    @FiiO First of all, thank you for this wonderful player, it will be mine in a few days, at the end of may.
    Just one question. What is the card transfer rate in both slots?

    Thank you very much
     
  5. FiiO
    Dear friend,

    Card slot 1: 10M/s, Card slot 2: 20M/s. Just for reference, the transfer rate is also depended on the card you used.

    Best regards
     
    FiiO Stay updated on FiiO at their sponsor page on Head-Fi.
     
    https://www.facebook.com/FiiOAUDIO https://twitter.com/FiiO_official https://www.instagram.com/fiioofficial/ https://www.fiio.com http://fiio.udesk.cn/im_client/?web_plugin_id=24494&group_id=47899&language=en-us
  6. piscattore
    Thank you very much for the info.
     
  7. Takeanidea
    The dual card slots will be a deal breaker for many of your customers. I would suggest that your engineers find a way around the problem with Card Slot 1 without removing or throttling the speed. They are, I'm sure, quite capable of doing this if they can produce something as capable as the M11
     
  8. Thraex
    The M11 was my choice for its dual micro SD slots, I need both for my large music collection of high res files.
    Don't remove Slot 1 in any future firmware update!

    But we want more: full speed Slot 1.

    It's still unclear if you needed to lower the speed of Slot 1 just for compatibility with some problematic micro SD like Lexar, or if it is necessary for any brand produced in 512GB micro SD capacity.

    If the issue is just for Lextar or similar, please don't lower the Slot 1 speed for all the others.
    Instead make a list of brands/model which are safe at full speed even at 512GB and give the user the option to use the faster Slot 1 firmware.

    The best solution should be doubling the firmware for each revision:
    1) Firmware A at full speed Slot 1 with compatible micro SD.
    2) Firmware B at lower speed Slot 1 with problematic micro SD.
    The footnote in each firmare should read "If you're unsure use firmware B, if the micro SD is listed below use firmware A"
    ".....list of compatible micro SD....."

    Could you do it to completely satisfy your customers?
     
  9. Shmuel
    Agree with above: one of the main reasons for purchase is the dual card slots.

    Please try to keep this feature.

    Thank you.
     
  10. Object113
    two cards are nice , if you can add sim card would be even better, for simple tasks .
    by the way does M11 suports UHS-2 cards , i cant find information.
     
    Last edited: Jun 5, 2019
    piscattore likes this.
  11. FiiO
    Dear friend,

    1. The M11 could not support Sim card.
    2. Do you mean this card: upload_2019-6-10_10-25-14.png
    If yes, it is not supported by M11.

    Best regards
     
    FiiO Stay updated on FiiO at their sponsor page on Head-Fi.
     
    https://www.facebook.com/FiiOAUDIO https://twitter.com/FiiO_official https://www.instagram.com/fiioofficial/ https://www.fiio.com http://fiio.udesk.cn/im_client/?web_plugin_id=24494&group_id=47899&language=en-us

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