1. BoSuaGameZone

    OP BoSuaGameZone Newbie
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    Hi!
    I have the Ez flash Jr updated to fw.5 and using a class 10, 16Gb micro sd card. When i boot my Gameboy color, it stucks at the Loading...Osinit...screen.
    I tried to format the sd, tried to use the ez flash jr with another devices (gba, gba sp...) but it still the same.
    Please help, does anybody know how to fix it?
     

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  2. Shadow#1

    Shadow#1 Wii, 3DS Softmod & Dumpster Diving Expert
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    Try on a not moded system
     
  3. BoSuaGameZone

    OP BoSuaGameZone Newbie
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    Yes i did, i tried on the gameboy color original and nothing changed.

    — Posts automatically merged - Please don't double post! —

    I tried it with some others devices, like GBC, DMG, GBA SP...
     

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  4. EZ-Flash2

    EZ-Flash2 Official EZ-FLASH Stuff
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    try a sandisk red 32GB
     
  5. BoSuaGameZone

    OP BoSuaGameZone Newbie
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    I tried many sd card, and they are all the same problem.
     
  6. EZ-Flash2

    EZ-Flash2 Official EZ-FLASH Stuff
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    At the download page, I wrote a note about the SD card speed will cause the halt issue.

    You can check your private message. I'd sent a recovery tool to you.
     
  7. BoSuaGameZone

    OP BoSuaGameZone Newbie
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    Thank you very much!
     
  8. johnnytheboy12

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    hi i have a similuar problem when using mt gameboy pocke after a game is loaded annd i press reset on the cart to return to game selection it gets stuck at the loading... however if i do a power cycle it allows me to boot it as normal and select another game. i can not recreate this issue on the gbc, gba, or gba sp as when i press the reset on those handhelds it returns to the game selection screen as expected. Is this a known issue with the gameboy pocket or am I possibly doing somethinng wrong. Thanks
     
  9. Jacobf0303

    Jacobf0303 Advanced Member
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    @BoSuaGameZone did you ever get it fixed? I've been having the same problem for the last 2 days, all EZFlash did is send me the recovery tool, which didn't fix my problem.
     
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  10. BoSuaGameZone

    OP BoSuaGameZone Newbie
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    No, not yet. I've tried many ways but no hope. I'm using the recovery tool same as you did.
     
  11. Jacobf0303

    Jacobf0303 Advanced Member
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    damn, it's very frustrating, I've spoken to the EZFlash team quite a lot and all they say is "keep trying" I've tried it dozens of times, different SD cards, gameboys, ect to no avail, very frustrating. good luck with yours, and if I somehow find a solution, I'll let you know
     
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  12. BoSuaGameZone

    OP BoSuaGameZone Newbie
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    yah, me too. And i almost give up, go buy another one, hope it don't have same problem. Please let me know if you find a solution. Thanks somuch <3
     
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  13. BeniBel

    BeniBel Advanced Member
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    Be sure to format with the correct cluster size (I thought 32kb?). This fixed it for me.
     
  14. BoSuaGameZone

    OP BoSuaGameZone Newbie
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    Yes, i did and nothing changed :-(
     
  15. Jacobf0303

    Jacobf0303 Advanced Member
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    what cluster size do you use? I've tried 32kb and 64kb but neither worked for me
     
  16. EZ-Flash2

    EZ-Flash2 Official EZ-FLASH Stuff
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    Since the two of you have not solved the problem, it is okay to put here together to solve.
    Because I have been contacted by quite a lot users who have upgraded the RC firmware by mistaken,
    From the success stories of the fix. All the conditions that can increase the success rate are listed below.

    why stucked in OSINIT?
    Because FW5RC experimentally improved the read efficiency, however, we did not take into account that most users use SD cards that are not as fast as our sandisk red 32GB, so in the time limit set by the firmware, slower SD cards cannot load the full kernel in time, so they will get stuck in OSINT.

    You must have an enough fast SD card, a genuine sandisk red 32GB is the best all we know. it can increase the success rate to load the recovery kernel.

    DO NOT USE SDXC card. or older years small card.

    best way is preparing two SD card. one sandisk red 32GB, one is other SD card which you can use on the EZ-Jr before(FW4). swap cards is faster on retry.

    1. format both SD card with FAT32, 32KB file allocation unit size.
    2. put recovery kernel on sandisk 32 GB SD
    3. put 1.04 kernel on other SD
    4. plug sandisk into EZ-Jr, power up, wait at OSINIT 10 seconds or more. shutdown
    5. plug 1.04 kernel SD into EZ-Jr, power up.

    if you can enter the kernel, it means firmware downgrade successful. if not, repeat step 4 and 5.

    Other conditions: If it is a battery model, please ensure that the battery power is sufficient, if it is rechargeable model, please plug in the charging cable.
     
    Last edited by EZ-Flash2, Mar 1, 2021
  17. Jayro

    Jayro MediCat Dev and Gameboy Modder
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    The Gameboy Pocket is a very finicky system. It's why I don't even bother modding them. Too many issues (and no good battery mods that I'm aware of).
     
  18. Jacobf0303

    Jacobf0303 Advanced Member
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    The card I use is the SanDisk Red 32GB SDHC formatted to FAT32 using 32KB unit size, it was formatted without the "quick format" setting, and was formatted using the offical SD card company formatting tool, sadly I've tried the recovery tool too many times to count, I've previously only let it stay on the OSINIT screen for 10 seconds as recommended, but I've also let it sit on that screen for as long as an hour for good measure, and my flashcart is still not booting, it's such a strange issue, I have everything correct, the right firmware, the right SD card, and the recovery kernel, and yet it still doesn't work.

    — Posts automatically merged - Please don't double post! —

    my theory of why the recovery tool isn't working is that like you mentioned, the cart is trying to load the kernel too fast for the SD card, is it possible that you could make a new recovery kernel that is smaller in size and loads faster? that might fix the issue.
     
  19. EZ-Flash2

    EZ-Flash2 Official EZ-FLASH Stuff
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    As I said before. recovery kernel is used to invalidate the FW5RC on your card. then you can boot the kernel 1.04 normally.

    If you put a SD with kernel 1.04 and still stuck at OSINIT. It means the invalidate process does not success. FW5RC still working, you know?

    about the recovery kernel. it is only 16KB size. it contains all necessary codes.

    I think the problem should be in the part that we did not notice(physical condition or operation) , like as before all your operations are done on SDXC.
     
  20. Jacobf0303

    Jacobf0303 Advanced Member
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    I purchased an SDHC card today, I was using an SDXC card previously, but now I'm using the SanDisk red 32GB SDHC and I've used the recovery tool on the new card and it still doesn't work, so that's not the issue.
     
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