[Q] Switch between stock rom

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Loperaco

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Sep 4, 2014
44
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Hi.

My problem is this, I have a G900F and I want to change to a stock rom G900M, for the model that I have does not have the band 4 and the firmware of another if, try switching using Odin, but it generates an error, how can I do this ?

Thanks for your help.
 
fffft

fffft

Senior Member
Jul 16, 2013
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Loperaco said:
I have a G900F and I want to change to a stock rom G900M, for the model that I have does not have the band 4 and the firmware of another if, try switching using Odin, but it generates an error, how can I do this ?.
Click to expand...
Click to collapse


If only it was that easy. No, you can't do that. At least not that way.

The primary reason that Samsung has a dozen and a half variant models is to deter grey market sales and block exactly what you wish to do. To do this you need to rewrite some non-volatile registers. LTE band 4 is more commonly known an AWS and it is the only band to be successfully added, AFAIK. At least to the S3, S4, N3, et al. I'm not sure if anyone has confirmed it on the S5 to date or not.

A proper search will confirm that for you. The change is made with the QPST program and written to NV, usually through a .qcn write or NV edit upon boot. You have lots of keywords to search on, so do a search and you'll find all of the details.

.
 
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Loperaco

Member
Sep 4, 2014
44
1
Hi fffft.

OK, I've read what you've written me a couple of times, however I can not understand you very well, since this is my first Android, you mind if I ask you a step by step explanation?

Thank you.
 
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Loperaco

Member
Sep 4, 2014
44
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    fffft
    fffft
    Loperaco said:
    I have a G900F and I want to change to a stock rom G900M, for the model that I have does not have the band 4 and the firmware of another if, try switching using Odin, but it generates an error, how can I do this ?.
    Click to expand...
    Click to collapse


    If only it was that easy. No, you can't do that. At least not that way.

    The primary reason that Samsung has a dozen and a half variant models is to deter grey market sales and block exactly what you wish to do. To do this you need to rewrite some non-volatile registers. LTE band 4 is more commonly known an AWS and it is the only band to be successfully added, AFAIK. At least to the S3, S4, N3, et al. I'm not sure if anyone has confirmed it on the S5 to date or not.

    A proper search will confirm that for you. The change is made with the QPST program and written to NV, usually through a .qcn write or NV edit upon boot. You have lots of keywords to search on, so do a search and you'll find all of the details.

    .
    View

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