[Q] Can I flash a international I9505 modem to my I337? - AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin

Hi,
I took my I337 AT&T S4 (GE45, boatloader MDL, baseband NI1) to Taiwan and is currently running on Chunghwa Telecom 4G TLE network. But I am not getting the LTE speed because CHT uses band 2 1800mhz while AT&T uses all these other bands beside the 1800mhz.
I want to flash an international version modem like the latest XXUGNG2 so I can get the 1800mhz frequency. Is this doable?
Someone said it's a bad idea to use a modem from a different variant. So would it be better if I flash an I9505 custom rom like Omega or Echo first, and then flash a AT&T suitable kernel than flash the I9505 variant's modem?

Me too but noone help us.

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[Q] Change S4 ATT 4G Band/Frequency

Hello, I have a SGH-i337 (I337UCUAMDL) with Goldeneye 49 ROM sim unlocked
My model has a 4G LTE 700/1700/2100 band/frequency.
But here in my country (Brazil) we use 2.5~2.6MHZ frequency for 4G
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Vinao said:
Hello, I have a SGH-i337 (I337UCUAMDL) with Goldeneye 49 ROM sim unlocked
My model has a 4G LTE 700/1700/2100 band/frequency.
But here in my country (Brazil) we use 2.5~2.6MHZ frequency for 4G
The international version (I9505) have the brazilian frequency, so my question is: Can I somehow change the frequency or flash the i9505 modem to my cell phone in order to be able to use my country's frequency?
Thanks!
Click to expand...
Click to collapse
Sorry, but there's hardware differences between the i337 and i9505. It's not as easy as flashing a modem.
Sent from my Nexus 9 using XDA Free mobile app
Thanks for your reply man

Base Band and Country???

Guys i like to flash lollipop rom for galaxy s4 i9505, but my base band version and country is different from the released ROM's in sammobile. can i flash a ROM from another country? UK for example ? even though the base band is different ?
Demitha said:
Guys i like to flash lollipop rom for galaxy s4 i9505, but my base band version and country is different from the released ROM's in sammobile. can i flash a ROM from another country? UK for example ? even though the base band is different ?
Click to expand...
Click to collapse
You can. But you might have signal issues due to the baseband being for another country.

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