Develop Bugs

Changing Band on T-Mobile PocketPC 2003 (XDA1)

Hi,
My XDA1/T-Mobile PPC is on the XDA Developers SER 1.2 ROM and it has utility wherein I can change GSM mode from GSM900 to GSM 900/1800 to GSM 1900. I recently upgraded through the T-Mobile WM2003 ROM and Radio exe file. Now, I wish to have that utitlity again becuase now I am in asia and it is practical to have the GSM 900/1800. But I am also been goind to the US from time to time so I don't want to lose the 1900 BAnd. Is there a utility somewhere where I can change band?
I saw somewhere that I can change band via the bootloader: I am not familiar with the bootloader can somebody tell me how to change my band to 900/1800? Is it easy if I want the 1900 band back beacuse I'll be going to the states in a months time, and after that I will be back in Asia again (so I have to change to 900/1800 again). Pls help. Thanks.
BTW my device information is as follows:
Hardware Ver. PW10B1
ROM: 4.01.16 ENG
Radio: 6.25.02

try changing which rom you have, maybe that will change the band

Changing Bands
Try,
:arrow: http://wiki.xda-developers.com/wiki/ChangingBandsWithBootloader

Hi,
If your device is B type, that means it's 900/1900 MHz (plz refer to the rear sticker and don't rely on the device info data!) ... so, in Asia you are stuck with 900 MHz ... anyway, changing the band from the bootloader is not that safe action ... some times it make the xda hang a need a many hard reset actions to get back.
I would advice you to get XDA II which is tri-band by design.

The latest official US T-Mobile ROM v4.01.16 still allows the bands to be switched within the OS, whereas with the latest official US ATT ROM vA.30.09 said to be able to switch automatically.

Thanks for the replies. So it is not recommended to switch bands with bootloader?
reydiodj: What do you mean by switching bands within OS? Does that mean I can still get 18000 frequencies?[/b]

thanks for the replies. No need for me to change the band, my device already works perfectly now.

[Q] Select Band LTE

Hello, I am writing to inquire about a problem that I have.
I have the F240L, and wore the ROM "SphinX GPRO KK V1.5", all good so far, but I have problems with 4G.
I have only 2G/3G reception.
I've been to "Hidden menu"
Then I selected "LTE-only"
Then "Modem Setting"
Then "LTE Band Selection"
And I select "Band 7", which is used by my country Chile to the 4G network, but then I again I enter the same menu and was not checked. :crying:
Someone who can help me.
thanks

LTE band
Having the same problem here, but i think its because of this;
F240K for KT Corporation – LTE 900/1800, Band 8/3
F240L for LG UPlus – LTE 850/2100, Band 5/1
F240S for SK Telecom – LTE 850/1800, Band 5/3
these are the supported band for specific models. I Think it cannot be changed using software because this is hardware related.

romikavinda said:
Having the same problem here, but i think its because of this;
F240K for KT Corporation – LTE 900/1800, Band 8/3
F240L for LG UPlus – LTE 850/2100, Band 5/1
F240S for SK Telecom – LTE 850/1800, Band 5/3
these are the supported band for specific models. I Think it cannot be changed using software because this is hardware related.
Click to expand...
Click to collapse
And flash a modem Hybrid?
Or modifying buil pro?

Flashing a modem means flashing the correct radio that maches the hardware. So basically hardware baseband cannot be changed.So it won't work. And build prop is for ROM properties. You can't use it to change the baseband.

romikavinda said:
Flashing a modem means flashing the correct radio that maches the hardware. So basically hardware baseband cannot be changed.So it won't work. And build prop is for ROM properties. You can't use it to change the baseband.
Click to expand...
Click to collapse
I found this video, where if they can do
youtube.com/watch?v=iSaDRofNztU

[Q] Flashing e250k modem to e250l?

Is it possbile to flash other e250x modems to e250L?
I think this is a modem issue.
I'm from Myanmar and I only get 2g connection on my note 2 shv-e250L. (There is no lte here but 3g bands 900/2100mhz Ooredoo, which my phone can't read now.)
Help me brothers. Thanks.

Up

How to flash n910f rom on n910p and enable LTE band 3(1800)

i have note 4 n910p sprint version but its lte band not supported in my country network band so n910f model lte work fine here so i want to convert my n910p to n910f .... can anyone tell me how to do this..

Atif61 said:
i have note 4 n910p sprint version but its lte band not supported in my country network band so n910f model lte work fine here so i want to convert my n910p to n910f .... can anyone tell me how to do this..
Click to expand...
Click to collapse
Yes i have the exact same question,,, can we do this?? because non of the custom roms are supporting 4G even after manually updating the apns... any idea please?

i think you have to mess with the processor NV value or something.There is a unlock LTE bands thread here somewhere.It only unlocks LTE bands for Qualcomm based phones.Doesn't not add new bands that were not there to begin with but just unlocks them.LTE Apn's won't work unless the band is avaliable, you will just get HSPA or HSPA+.Note 4 snapdragon does have band 3 support, so you're in luck but the process is very risky as it involves editing the heart of your device.I was about to do it but it was too risky lol.Lots of people have had success with the unlocking, notiably Samsung users.

Help Unlock 900 mHz WCDMA band.

I have an AT&T LG Optimus G Pro e980 20h. We have 3G on the 900 mHz band. Is it possible to unlock this band in this phone? Does it have this band hidden? Could this be done changing to a custom rom? Please, help me with this.
I have gone through this forum, but have not found an answer yes...
Thank you very much....

yes, it is easy to do it.
i flashed my phone (e980) with e988-20c, then flash back att modem.
enable hidden menu to choose "WCDMA only", then "modem setting", choose "network mode" to enable WCDMA 900, you should see "success"