Unlock extras LTE Bands

[A²ronLil]

Hello guys and girls. I successfully unlocked the bootloader of my SM-G900V and now I'm on the most smooth CM ever.

I live in Brazil, and here we don't have the LTE bands that the Verizon's S5 uses. So I tried unlock additional bands using this thread: http://forum.xda-developers.com/galaxy-s5/general/how-to-add-rf-lte-frequency-bands-to-t2886059.

Guess what? Didn't work.

It occurred to me that the problem could be the modem firmware, so I tried to flash modem from the others variants, and.... nope. ODIN's flash fail, and the download mode screen says "SECURE CHECK FAIL: modem" (something like that).

I almost made an attempt to flash using dd, or recovery, but decided to ask first.
Honestly it's hard to find a flashable zip of any version of modem.

I already made a backup of modem partition, in case of anything goes wrong.

The only LTE band I need is the 7.

My questions are:
Does anyone tried this before?
What is the risk to flash a modem firmware from other variant using dd/recovery?

 

[alin919]

Hello guys and girls. I successfully unlocked the bootloader of my SM-G900V and now I'm on the most smooth CM ever.

I live in Brazil, and here we don't have the LTE bands that the Verizon's S5 uses. So I tried unlock additional bands using this thread: http://forum.xda-developers.com/galaxy-s5/general/how-to-add-rf-lte-frequency-bands-to-t2886059.

Guess what? Didn't work.

It occurred to me that the problem could be the modem firmware, so I tried to flash modem from the others variants, and.... nope. ODIN's flash fail, and the download mode screen says "SECURE CHECK FAIL: modem" (something like that).

I almost made an attempt to flash using dd, or recovery, but decided to ask first.
Honestly it's hard to find a flashable zip of any version of modem.

I already made a backup of modem partition, in case of anything goes wrong.

The only LTE band I need is the 7.

My questions are:
Does anyone tried this before?
What is the risk to flash a modem firmware from other variant using dd/recovery?

A guy from Mexico claim this: http://forum.xda-developers.com/ver...how-to-enable-lte-band-41700-2100-to-t2990105

 

[A²ronLil]

A guy from Mexico claim this : http://forum.xda-developers.com/veri...00-to-t2990105

Thanks, but the link is broken. :fingers-crossed:

 

[alin919]

Thanks, but the link is broken. :fingers-crossed:

Try now.

 

[A²ronLil]

A guy from Mexico claim this: http://forum.xda-developers.com/ver...how-to-enable-lte-band-41700-2100-to-t2990105

Unfortunately it will not work. I've already tried before unlocking the bootloader. I'm now on CM13, and they does not have a hidden menu, only stock firmware (or port). Plus, when I accessed the menu on stock firmware, the B7 option said something like "not supported". Probably because the software is modified by Verizon.

 

[alin919]

Unfortunately it will not work. I've already tried before unlocking the bootloader. I'm now on CM13, and they does not have a hidden menu, only stock firmware (or port). Plus, when I accessed the menu on stock firmware, the B7 option said something like "not supported". Probably because the software is modified by Verizon.

Did you try the galaxy Tools to change the bands and edit the apn?

 

[A²ronLil]

Did you try the galaxy Tools to change the bands and edit the apn?

Nope. What is this?

 

[alin919]

Nope. What is this?

Idoneapss.

 

[camcorder123]

Some clarification: Galaxy Tools by Idoneapps is a tool for changing various APN and hidden settings on the S5. I couldn't find an official link, but I have a direct link to the AndroidFileHost download. https://www.androidfilehost.com/?fid=24052804347804710

You can probably find the band and APN settings yourself easily enough, but I'll do some experimenting and update when I find the options. It isn't the easiest UI.

 

[alin919]

Some clarification: Galaxy Tools by Idoneapps is a tool for changing various APN and hidden settings on the S5. I couldn't find an official link, but I have a direct link to the AndroidFileHost download. https://www.androidfilehost.com/?fid=24052804347804710

You can probably find the band and APN settings yourself easily enough, but I'll do some experimenting and update when I find the options. It isn't the easiest UI.

Thanks for clarification , i was at work with no cell tower :good:

 

[alin919]

Some clarification: Galaxy Tools by Idoneapps is a tool for changing various APN and hidden settings on the S5. I couldn't find an official link, but I have a direct link to the AndroidFileHost download. https://www.androidfilehost.com/?fid=24052804347804710

You can probably find the band and APN settings yourself easily enough, but I'll do some experimenting and update when I find the options. It isn't the easiest UI.

Idoneapss.

This is the working links off apk file . You can play with , try different settings and remember if something not working wright always restore to initial settings . Good luck !

 

[A²ronLil]

Yesterday I tried to flash modem.bin and NON-HLOS.bin from another device using "dd". The flash was ok, and the device did turn on without problems.
I tried the baseband of these three devices: SM-G900M, SM-G900P and SM-G900T.

But... no LTE for me.

I'm still looking for a way to do this.

 

[ccic2491]

I have the Verizon varient and was able to set the APN to exactly to what my unlocked moto x pure is. It works perfect with at&t.........so far. I guess it's all about the APN since the sim is unlocked.