GB stock modem for JB???

[shadieboy]

Is it possible to get bck the GB stock modem for JB?? Reason being is that my network now isn't as good as it used to when i was GB.. i often have low signal and i dont get the 'H' like i used to.. i really dont want to go bck to GB so I have flashed a few modems but none works as good as the stock one..Any suggestions?? .


ROM: SlimBean 4.1.2
Country: Jamaica

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[BWolf56]

Is it possible to get bck the GB stock modem for JB?? Reason being is that my network now isn't as good as it used to when i was GB.. i often have low signal and i dont get the 'H' like i used to.. i really dont want to go bck to GB so I have flashed a few modems but none works as good as the stock one..Any suggestions?? .


ROM: SlimBean 4.1.2
Country: Jamaica

Sent from my SGH-I897 using xda app-developers app

I think the stock one is JK4 for JB. But for jamaica, I'd suggest looking at the modems your carrier is on, those would probably be the best.

 

[shadieboy]

Ok after doing some research i found out that the network I'm on uses the 900mhz frequency.. which modem uses 900mhz as default?

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[BWolf56]

Ok after doing some research i found out that the network I'm on uses the 900mhz frequency.. which modem uses 900mhz as default?

Sent from my SGH-I897 using xda app-developers app

A modem with 850mhz unlocked would probably do great but what I think would be best is to find the base of your carrier's modem.

 

[shadieboy]

A modem with 850mhz unlocked would probably do great but what I think would be best is to find the base of your carrier's modem.

Sorry for being a noob but I'm lost.. what do u mean by "the base of my carrier's modem"??

My network is Digicel

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[BWolf56]

Sorry for being a noob but I'm lost.. what do u mean by "the base of my carrier's modem"??

My network is Digicel

Sent from my SGH-I897 using xda app-developers app

Well, JK4 is actually UGJK4. So let's say you have JK3 (UGJK3) and it works great, you know that the newer modem, JK4, will work well.

But now that I'm thinking about it, did your phone come with GB? If so, it's quite hard to us to know which modem is came with. Modems are by area so (almost) every carrier uses different one. There's a modem thread in the Dev section (stickied), you might have to try a few different one.

 

[shadieboy]

Well, JK4 is actually UGJK4. So let's say you have JK3 (UGJK3) and it works great, you know that the newer modem, JK4, will work well.

But now that I'm thinking about it, did your phone come with GB? If so, it's quite hard to us to know which modem is came with. Modems are by area so (almost) every carrier uses different one. There's a modem thread in the Dev section (stickied), you might have to try a few different one.

When i got the phone it was running Froyo which I later updated to GB.. my brother's Cappy has the UCKK4 and he's still running GB.. we got the phone the same time and both updated the same time so I'm assuming that is what I had before I upgraded to JB.. I'm on JK3 modem but i can't seem to flash JK4 or any other modem.. it always ends with an error...

[Status: 0]
Installation aborted..

I re-downloaded the file several times and still nothing.. I even changed the CWM and nothing.... I'm on the verge of giving up

CWM: Semaphore 2.8.0

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[4-2ndtwin]

U can use Odin3 v1.83 (the regular Odin) to flash a modem as well. Just pull the modem.bin out of the cwm zip of the modem u want, get into download mode, put the modem.bin in the PHONE tab/slot in Odin and flash.

Get the Odin here if u don't have it already... http://forum.xda-developers.com/showthread.php?p=33577757

If u r running a JB Rom, then u will have to use one of these modems...http://soggycashew.weebly.com/cm7miui--ics-modems.html
I have had success with the i9000ugkc1.

Sent from my SAMSUNG-SGH-I777 using xda premium

 

[shadieboy]

U can use Odin3 v1.83 (the regular Odin) to flash a modem as well. Just pull the modem.bin out of the cwm zip of the modem u want, get into download mode, put the modem.bin in the PHONE tab/slot in Odin and flash.

Get the Odin here if u don't have it already... http://forum.xda-developers.com/showthread.php?p=33577757

If u r running a JB Rom, then u will have to use one of these modems...http://soggycashew.weebly.com/cm7miui--ics-modems.html
I have had success with the i9000ugkc1.

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I give up... i followed your instructions and ended up with an unknown imei so I had to re-flash everything.. I'm just gonna stick with the modem I have...

Thanks though.:thumbup:

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[BWolf56]

I give up... i followed your instructions and ended up with an unknown imei so I had to re-flash everything.. I'm just gonna stick with the modem I have...

Thanks though.:thumbup:

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No need to give up, you can flash modems after modems without any problem. It just a bit time consuming.

To be safe, backup your efs folder so that if your IMEI is unknown again, you can use the backup.

 

[4-2ndtwin]

Ok after doing some research i found out that the network I'm on uses the 900mhz frequency.. which modem uses 900mhz as default?

Sent from my SGH-I897 using xda app-developers app

From what i know of the Captivate specs...the gsm 900mhz frequency that it can operate on is just the 2g/edge network. U said u saw the H before on GB rom (custom rom or leaked firmware, i'm guessing?). That letter H can be changed to read whatever letter u want. Just saying.
So in reality the problem may not be the modems (although some modems will work better than others for sure), it may just be the network service that your provider has in your area... It may just be low/bad cell signal.
What other frequencies are used by your provider ? Compare that with the frequency band specs of the Captivate and you will get a better answer on the quality of service you should expect. Maybe your provider has a coverage map that you could compare to as well.

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