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Support Diagnostic mode?

Discussion in 'Android Devices' started by kolosus, Jan 9, 2012.

  1. kolosus

    kolosus Well-Known Member
    Thread Starter
    113

    Oct 12, 2010
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    PA/NJ Usa
    Anyone know how to put the Prevail into Diagnostic Mode?

    I know that on the Epic it is ##8778#. But on the Prevail it brings me to a screen but the computer wont pick it up as a device in diagnostic mode on any port. It does pick it up as a Samsung Modem. I have the standard drivers... could it be that I need to get diagnostic drivers? Disabling the modem didn't help either.

    Any help/ideas folks?
     

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  2. Alsaces Daddy

    Alsaces Daddy Well-Known Member
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    Nov 13, 2011
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    Electrician
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    I have used dm before without a hitch. Do you have USB debugging on? Or "ask on connection"?
     
    Nomad1 likes this.
  3. Topken

    Topken Well-Known Member
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    I think it's ##7876# then hit email and it should reboot into the mode you need at least that's what I have o do on the to be able to change the prl of the phone
     
  4. new optimus

    new optimus Well-Known Member
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    Jax Fl
    this should help
     
    Tannus, cafmaster, zehn and 2 others like this.
  5. Topken

    Topken Well-Known Member
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    I thought I might of had the 7678 swapped around and I did thanks for that post as that is what i was trying to explain
     
  6. iPhOneH8tr

    iPhOneH8tr New Member
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    Jan 15, 2012
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    I've been looking for an answer/fix to the usb diag port issue after using GB V2.1 from AA51. This worked perfectly
    Thank you very much
     
  7. new optimus

    new optimus Well-Known Member
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    your welcome
     
  8. prevail2exist

    prevail2exist Well-Known Member
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    Oct 11, 2011
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    ok I know im going to make myself sound stupid but where do i dial ##7678# in order to be able to put in my msl number?
    I've done it before just cant remember where I did it at
     
  9. johnny424

    johnny424 Well-Known Member
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    HVAC Sheetmetal Mechanic/ Service Tech
    Washington Dc
    use your dialer bro:D

    Sent from my SPH-M930BST using Tapatalk 2 Beta-4
     
  10. prevail2exist

    prevail2exist Well-Known Member
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    Oct 11, 2011
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    I tried that but nothing happened:(

    Edit: ok i tried the first number given which was ##8778# and the numbers just disappear
     
  11. Caeadas

    Caeadas Well-Known Member
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    Jan 12, 2012
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    Georgia, USA
  12. prevail2exist

    prevail2exist Well-Known Member
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    Oct 11, 2011
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  13. pretty sure it works for both

    Sent from my VIC-20 using Tapatalk 4 Beta-7
     
  14. Lordvincent 90

    Lordvincent 90 ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓
    583

    Oct 5, 2011
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    entertainer
    grand rapids,mi
    3.3 is made from another phones ROM... The dialer isn't supported in 3.3 either
     
  15. johnny424

    johnny424 Well-Known Member
    183

    Nov 2, 2011
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    Washington Dc
    yeah above post didnt say what rom he was using..plus i havent messed with prls and the hidden menu sense ctmod 2.4...i know back then you used the dialer..plus i thought he was asking where you would enter those numbers..thats why i said the dialer:)
    i dont know much about that dl mode script so i wouldnt be of anymore help
    Sent from this Gtab 10.1 using Tapatalk 2 Beta 2
     
  16. wetbiker7

    wetbiker7 Well-Known Member
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    Jun 27, 2011
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    USN Vet. / Certified Drug and Alcohol Abuse Counse
    So-Cal


    It does .
     
  17. 504rebel

    504rebel New Member
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    Jun 13, 2012
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    Have prevail...rooted...switched both 7876 & 8778 to USB...but still seems not to be in diag mode... Can't get cdma workshop to Connect...."failed.. Phone not answering"...3 days straight...HELP PLEASE
     
  18. tivofool

    tivofool Well-Known Member
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    Apr 16, 2012
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    When you dialed #7678## entered msl then selected dm , did your phone reboot?
     
  19. fcortes626

    fcortes626 Well-Known Member
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    FedEx and Auto tech student
    Los Angeles
    what rom are you running?
     
  20. cwhatever

    cwhatever Life Goes On
    313

    Mar 4, 2012
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    Master Technician
    south central fla
    prolly not 2.5 or lower and not 1/2 ass.
     
  21. fcortes626

    fcortes626 Well-Known Member
    53

    Jul 28, 2011
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    FedEx and Auto tech student
    Los Angeles
    the script doesnt work on all phones. best thing to do is to make a backup and flash ctmod 2.4 and then dial ##7678# select dm and your phone should reboot. thats what i do and it works. did it a couple of days ago and it worked
     
  22. CooLoser

    CooLoser Well-Known Member
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    Feb 28, 2012
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    ##7678# the phone will reboot.
     
  23. shawner808

    shawner808 New Member
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    Jun 27, 2012
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  24. jeffersds

    jeffersds New Member
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    Dec 22, 2013
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    hi, I have been trying to access my sph-m820bst through CDMA WS for several days to no avail. Every time I try to put it in DM regardless of rom (CT MOD3.8, HalfAssRom1_0, 187MoD-HoneyBread6) it fails to accept the MSL with an error message saying "modem exception occours". It also randomly reboots and dialer hangs when dialing. Thinking it may have something to do with the custom rom, I have spent the last few days searching for a stock rom but, all of the links posted in "all-things-root" thread are broken with the exception of the FF18-rooted, but the file is unflashable as far as I can tell. Im only using the phone for a doner phone, so the random reboots really don't matter that much to me unless someone thinks it may be a symptom of a larger problem. Any help provided would be GREATLY APPRECIATED! Thanks
     

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