1. Terry5008's Avatar
    Hello all,

    I'm having Marshmallow headaches with my S5 (battery drain, slowness, streaming apps disconnect for no reason, etc.) and have been researching how to go back to Lollipop. I have a few questions:

    1. Does a firmware image listed on sammobile.com have to match my PDA and CSC codes "EXACTLY"? If not, then what portion of the code must match? If it doesn't match, will it brick the phone? (Latest 5.0 rev for my phone is PDA:G900VVRU2BPB1 and CSC:G900VVZW2BPB1)
    2. Is flashing the phone with firmware from sammobile.com tantamount to "rooting" the phone? What are the security consequences of this?
    3. Are there any other consequences to flashing my phone, such as having to do with connecting to other devices?

    Below are the particulars of my phone:

    Model# SM-G900V

    Bootloader: G900VVRU2DPF4
    PDA Version: G900VVRU2DPF4
    CSC Version: G900VVRU2DPF4
    Baseband Version: G900VVRU2DPF4
    Android Version: 6.0.1
    Android Build# MMB29M.G900VVRU2DPF4
    Any help you guys can give me would be much appreciated.
    07-09-2016 05:22 PM
  2. ironass's Avatar
    1. No. The last 5 digits can change with each firmware release. The last 3 denote the build date and number details. see #1.8 of 42 Galaxy S5 models - Dummies Guide for more details.

    2. No. You are flashing the stock Verizon firmware that is issued by Verizon. See #1.6 of the aforementioned guide. In fact, the reverse is true as it will unroot a rooted phone.

    3. There should not be as it is stock Verizon firmware.

    I would advise against downgrading as you will not be covered by the latest security updates included in Marshmallow and the Verizon Marshmallow update will be forced onto your phone, sooner or later, by Verizon, in any case unless you root your Verizon Lollipop firmware and disable forced updates in the system. Try a FULL WIPE + FACTORY DATA RESET instead, as per post #2 of S5 Update Problems - Dummies Guide
    07-09-2016 07:32 PM
  3. Terry5008's Avatar
    In reference to item 1:

    Well, yes, the available PDA code does match up to 9 of 13 characters. But the CSC code only matches up to 6 of 13 characters. Not the requisite 8 of 13. Or does that matter? Is the PDA the only thing to worry about?
    07-10-2016 02:37 PM
  4. ironass's Avatar
    Can you post a link to the firmware you are referring to.
    07-10-2016 05:26 PM
  5. Terry5008's Avatar
    07-12-2016 02:00 PM
  6. ironass's Avatar
    That is the last stock Verizon firmware for Android 5.0, Lollipop.
    07-12-2016 03:15 PM
  7. Terry5008's Avatar
    I know that. That doesn't answer my question as to whether CSC matters.
    07-12-2016 03:30 PM
  8. ironass's Avatar
    I know that. That doesn't answer my question as to whether CSC matters.
    No. It does not.
    07-12-2016 04:08 PM

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