Need help to downgrade my Galaxy 551Support

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  1. BmxRacer4

    BmxRacer4 Member

    Hey, I flashed euro 2.3.6 on my north amercian galaxy 551 and now having issues with my texts not sending unless I pull out the battery and sim card or turn on flight mode. I want to downgrade back to 2.2.2 KC5 build, But don't know how


  2. karandpr

    karandpr Well-Known Member

    I dont know if the KC5 has the amss file required to restore prior functionality .
    In any case ,you need a Stock European Froyo ROM ,specifically ,the

    I5510XWKD4 firmware since it is the only FW with Froyo Bootloader .

    You will need to flash KC5 firmware over the KD1 .
    That is two flashes in total

    Check the link below for Firmwares
    SamMobile Firmware Page

    KD1 is under Smartphone-->Android-->GTI5510-->Europe

    KC5 is under Smartphone-->Android-->GTI5510M-->America (North)

    Order of flashing
    First Flash KD1 then KC1

    just curious ,can you tell me which FW do you have right now . XEO-KPG had the least problems . All others are touch and go .

    Cheers !!
  3. BmxRacer4

    BmxRacer4 Member

    I was using the KPG build, And thanks for the help and I can just use odin to flash the Firmware on right

  4. karandpr

    karandpr Well-Known Member

    Yeah use odin to flash back to froyo
  5. BmxRacer4

    BmxRacer4 Member

    OK, I did everything exactly how you said and my phone is no Bricked (black screen) I put into download mode, opened my ops and clicked one package put in the euro froyo and pressed start and Waited 10 mins and it said passed but would not boot

    Now I need to unbrick it
  6. karandpr

    karandpr Well-Known Member

    European ROMs are not One package ROMs

    There are four files ,PDA,CSC,,PHONE,BOOTLOADER .Try again with all four files
  7. BmxRacer4

    BmxRacer4 Member

    How do I get those files then? and I unbricked it and put 2.3.6 on for temp
  8. karandpr

    karandpr Well-Known Member

  9. BmxRacer4

    BmxRacer4 Member

    Thank you so much, I do it later tonight :D
  10. BmxRacer4

    BmxRacer4 Member

    Thank You So Much It Worked :D, I am back on 2.2.2 KC5 build
  11. rdenheijer

    rdenheijer New Member

    can someone pls explain how it worked bcos i did exactly what it say but for somereason it diesnt i have both image and now bcos i have the same problem when i downgrade to froyo 2,2 i have an gt-i5510m i want to go back to original stock rom bcos gps doesnt work after downgrading my phone is black to so what do i ahve to do to go back to original froyo 2.2?
  12. harsh007

    harsh007 New Member

    i have same problem i want to downgrade my GT-I5510 from 2.3.6 to 2.2
    i m from India plzz help me

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