[Modems][09 Jun 13] AT&T SGH-I777 (Samsung & AOSP Based ROMs)

[Peaster111]

I figured we'll need a consolidated modem thread at some point. We have several ROMS that have one or the other. All of the Modems are CWM zip'd up for your flashing pleasure. I've leave which is better up to you.

Modems For Samsung Based ROMs


i777 UCKH7 Modem_CWM:
http://www.androidfilehost.com/?fid=23060877489996815

i777 UCKJ4 Modem_CWM:
http://www.androidfilehost.com/?fid=23060877489996825

i777 UCKJ1 Modem_CWM:
http://www.androidfilehost.com/?fid=23060877489996823

i777 UCKJ2 Modem_CWM:
http://www.androidfilehost.com/?fid=23060877489996824

i777 UCKK6 Modem_CWM:
http://www.androidfilehost.com/?fid=23060877489996827

i777 UCLC2 Modem_CWM:
http://www.androidfilehost.com/?fid=23060877489996826

i777 UCPLC5 Modem_CWM:
http://www.androidfilehost.com/?fid=23060877489996828

i777 UCLD3 Modem_CWM:
http://www.androidfilehost.com/?fid=23060877489996817

i777 UCLD4 Modem_CWM:
http://www.androidfilehost.com/?fid=23060877489996818

i777 UCLE5 Modem_CWM:
http://www.androidfilehost.com/?fid=23060877489996819

*** Thanks to jeboo we have the UCLK3 modem ***
i777 UCLK3 Modem_CWM (Pulled by jeboo):
http://www.androidfilehost.com/?fid=23060877489996820

*** Thanks to Noz85 we have the UCLL6 modem ***
i777 UCLL6 Modem_CWM (Pulled by Noz85):
http://www.androidfilehost.com/?fid=23060877489996821

*** Thanks to creepyncrawly we have the UCMD8 modem ***
i777 UCMD8 Modem_CWM (Pulled by creepyncrawly):
http://www.androidfilehost.com/?fid=23060877489996822


Modems packaged in support of AOSP based ROMs

Thanks to RockRatt we have the modems packaged in support of all AOSP based roms (i.e. CyanogenMod 7&9 {CM7&9}, MIUI, AOKP and AOSP). Those compatible CWM versions can be found here:

http://forum.xda-developers.com/showthread.php?t=1336958

 

[echonc]

Thanks, saw the modem thread for cm7, didn't see this one. I will try kj4

Sent from my SAMSUNG-SGH-I777 using XDA App

 

[echonc]

Can't download file for some reason.

Sent from my SAMSUNG-SGH-I777 using XDA App

 

[Peaster111]

Can't download file for some reason.

Sent from my SAMSUNG-SGH-I777 using XDA App

Strange... I just tried both. They downloaded fine for me. Give it another shot.

 

[tmckenn2]

There is already one of these by rockratt

Mods should merge them or just delete this one

Sent from my SGH-I777 using XDA App

 

[Peaster111]

There is already one of these by rockratt

Mods should merge them or just delete this one

Sent from my SGH-I777 using XDA App

Rockratt's thread is for CM7 based ROM's. The CWM script is not compatible with stock based ROM's.

 

[Cau.At']

Thank you very much

KH7 or KJ4 ???

 

[NJGSII]

Thank you very much

KH7 or KJ4 ???

It seems to me that KH7 is faster on my phone.

 

[kytrauma]

It seems to me that KH7 is faster on my phone.

Mine also but not by much. 3.5 vs 4.0m


Sent from my GT-I9100 using xda premium

 

[hyelton]

So flashing a modem... does it help get better data speeds?

Mine also but not by much. 3.5 vs 4.0m


Sent from my GT-I9100 using xda premium

Sent from my SAMSUNG-SGH-I777 using XDA App

 

[Peaster111]

So flashing a modem... does it help get better data speeds?

Sent from my SAMSUNG-SGH-I777 using XDA App

If you're asking which is better, then the answer is... it depends on many factors. The best I can offer is to try the one you aren't currently using and give at least three days. Then you can't make your own assessment. Good Luck.

 

[echonc]

In theory it does. Some modems work better in different coverage areas. Maybe some one with knowledge can explain different modems.

Sent from my SAMSUNG-SGH-I777 using XDA App

 

[tmckenn2]

My apologies

Sent from my SGH-I777 using XDA App

 

[creepyncrawly]

@peaster111...
or any brave soul willing to risk their phone...

There are one or two additional modems that may be obtained for our phones, but there is some risk involved. There have been three leaked versions of the stock firmware so far, UCKJ1 and UCKJ2 in addition to the latest JCKJ4. All three of these were posted by designgears on the RootzWiki developers forum, and two of them here on xda in the general forum. UCKJ2, and probably UCKJ1 as well, were posted as Odin3 one-click downloaders containing alternative bootloaders along with the firmware and modems.

Warning: One, and probably both, of these one-click downloaders contain modified secondary bootloaders that prevent the use of the jig to reset the flash counter. After flashing these leaks, it would be necessary to flash back the original secondary bootloader posted by ach1701. There is a certain amount of risk involved in flashing bootloaders, and for various reasons, neither myself nor RockRatt has been willing to put our phones at risk.

To extract these modems, it would be necessary to install the leaks on your phone, then use adb or terminal emulator to extract the modem.bin file, return your phone to it's current state, perhaps with a nandroid backup, and then flash back the original secondary bootloader. Someone with a development phone may be more willing to risk this.

The specific directions to do the extraction can be found in this post.

Edit (8th December 2011): With the new tool "Mobile Odin", it is now possible to flash the Odin One-Click Downloader executable files safely without flashing the jig disabled secondary bootloader. Mobile Odin cowardly refuses to flash PIT, IBL/PBL, SBL, or EFS, even if present in the files. Additionally, after all of the available partitions have been loaded, any except Kernel and System can be cleared before flash.

 

[Peaster111]

@peaster111...
or any brave soul willing to risk their phone...

There are one or two additional modems that may be obtained for our phones, but there is some risk involved. There have been three leaked versions of the stock firmware so far, UCKJ1 and UCKJ2 in addition to the latest JCKJ4. All three of these were posted by designgears on the RootzWiki developers forum, and two of them here on xda in the general forum. UCKJ2, and probably UCKJ1 as well, were posted as Odin3 one-click downloaders containing alternative bootloaders along with the firmware and modems.

Warning: One, and probably both, of these one-click downloaders contain modified secondary bootloaders that prevent the use of the jig to reset the flash counter. After flashing these leaks, it would be necessary to flash back the original secondary bootloader posted by ach1701. There is a certain amount of risk involved in flashing bootloaders, and for various reasons, neither myself nor RockRatt has been willing to put our phones at risk.

To extract these modems, it would be necessary to install the leaks on your phone, then use adb or terminal emulator to extract the modem.bin file, return your phone to it's current state, perhaps with a nandroid backup, and then flash back the original secondary bootloader. Someone with a development phone may be more willing to risk this.

The specific directions to do the extraction can be found in this post.

Great bunch of info.. I'll see what I can gin up. This is the type of info we needed to consolidate our list of available modems.

Thanks!

 

[Peaster111]

My apologies

Sent from my SGH-I777 using XDA App

No worries at all... No need to apologize. We need to keep the threads clean and uncluttered.

It takes all of us working together. It is what makes xda work.

 

[saltytostitos]

I followed the link to the cm7 modem since I'm on MIUI. My data speeds on speedtest and speakeasy are slower by average.

However, my daily performance has a significant increase. Maybe speedtest doesnt show, but it seems my data connections are much more stable. When I want to download an app it begins downloading faster.

My end result I think is faster data.

 

[RockRatt]

@peaster111...
or any brave soul willing to risk their phone...

There are one or two additional modems that may be obtained for our phones, but there is some risk involved. There have been three leaked versions of the stock firmware so far, UCKJ1 and UCKJ2 in addition to the latest JCKJ4. All three of these were posted by designgears on the RootzWiki developers forum, and two of them here on xda in the general forum. UCKJ2, and probably UCKJ1 as well, were posted as Odin3 one-click downloaders containing alternative bootloaders along with the firmware and modems.[/url].

I tried go see if DG had them since he originally messed with those two leaks but I never beard anything back. Ya I messed with bootloaders once too many time on my Cappy so not messing with them now. Glad to see the cwm versions for the samsung based roms too. I haven't been on a Sammy rom since day 2 so I didn't get around to making them.

Sent From My KickAss ATT SGS2 SPORTING CM7

 

[barbo]

For those of us still learning about all this, a few questions:

#1 - Do these terms refer to the same thing? modem, radio, baseband

#2 - What does a "good modem" affect? both battery and data speed or just data speed? Does it affect anything else?

#3 - Does the best fit for any particular phone depend? the ROM or the area of the country or something else?

TIA

 

[Simba501]

For those of us still learning about all this, a few questions:

#1 - Do these terms refer to the same thing? modem, radio, baseband

#2 - What does a "good modem" affect? both battery and data speed or just data speed? Does it affect anything else?

#3 - Does the best fit for any particular phone depend? the ROM or the area of the country or something else?

1. Yes

2. Signal strength and data speeds (for wifi as well). Improved signal strength leads to better battery life, so it affects that too. Nothing else comes to mind. I'm sure someone else will chime in.

3. Best fit depends on the area. Even down to the neighborhood and specific device in my opinion. A modem that works amazingly well for someone else may be horrendous for you; you just have to give it a run.

Sent from my Galaxy S2