yashsingh1/xdaforums huggingface dataset:
[Sprint HTC EVO 4G LTE] weidnerj:
No problem figured it out by using bits and pieces of other's peoples work if you have S-off so:

Install TWRP recovery:

Download http://techerrata.com/file/twrp2/PJ75IMG-twrp-2.2.0-jewel.zip

Rename that to PJ75IMG.ZIP and put it on the root of your SD card. Power down the phone and then hold the volume down and power button to go into the boot menu. It will find the PJ75IMG.ZIP file and want to install it. Follow the directions and install it.

Once you reboot the phone, rename or delete the PJ75IMG.ZIP file.

For root, then download CWM-SuperSU-v0.87.zip (attached), and copy it to the root folder of the external SD. Power down the phone and then hold the volume down and power button to go into the boot menu. Select the recovery menu and TWRP will come up. Install the CWM-SuperSU-v0.87.zip file and reboot. You now will have root.
[Sprint HTC EVO 4G LTE] P.Mobile:
i got it thanks wwjoshdew!!!!!! the new hboot is 1.15.000. thanks josh!! u rock bro!!!!!! :highfive:;)
[Sprint HTC EVO 4G LTE] EVOMIKE025:
Didn't mean any disrespect by my comment, just you know when you see something and you wanna say "come on mannnnn", that's what I was thinking lol. We all get dumb founded so its cool, glad you figured it out... **** I though I wasn't going to be able to get out of bootloader after I relocked it, but ruu finally installed another boot image...thank god lol
[Sprint HTC EVO 4G LTE] wwjoshdew:
From my video?
[Sprint HTC EVO 4G LTE] P.Mobile:
yes from one of your video's :good:
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] SaHiLzZ:
Thanks to TMOKIETH: i747 ATT version is now working on AWS 3G T-Mobile: http://xdaforums.com/showthread.php?p=40121505#post40121505.

Please let me know if there are any more mirrors, or if a mirror stops working. Download files & Instructions from.

1. https://drive.google.com/folderview?id=0B-8k8YqAGEfNLUxMeE5YZDJhVk0&usp=sharing [Thanks bradhoschar]

2. https://www.dropbox.com/sh/yo6oig6c7rws3iq/FvmfVqxiYd [Thanks shafter13]

3. https://drive.google.com/folderview?id=0B9KfOSKSSjgdWFZuYVRmODNhV1U&usp=sharing

Please send your

bounties/donations/thanks/candies

to TMOKIETH @ krwusa@gmail.com. Without him, this wouldn't be possible.

Canadian S3 i747M is NOT working permanently on AWS 3G at this time. Changes are lost on restart. Kind of like a tethered iPhone.

If you would like to try it, please see: http://xdaforums.com/showpost.php?p=36410875&postcount=197

Old post:

I am starting a bounty thread for enabling 1700MHz/3G on i747/M similar to what was done for Galaxy Note i717 (Link) Please feel free to add your own donations. I will update the thread periodically. Regular bounty disclaimers apply.

Copying the following from another thread:

Donators:

SAHILZZ - $50

ysr84 - $50

m3x1cant7863 - $40

statewi - $150

theking_13 - $20

synpax - $20.65

allen2454 - $50

jsergio123 - $25

fmllc - $100

blackmamba - $25
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] SaHiLzZ:
No one interested to pitch in?
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] ysr84:
$50.00 I will contribute once there is a solution
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] sblees:
I'm just curious. What is the advantage of having 3g on that frequency? Better reception and service?

Thanks

Sent from my SAMSUNG-SGH-I747
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] Igotsanevo4g:
So you can use it on t mobile.

My question is, why not just buy a T-Mobile version if that's what you need. :scratches head:
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] oreo:
Probably more roaming options or using LTE in certain situations.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] nabbed:
Who said this was even possible? For all we know, these frequencies are disabled in hardware.​
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] ysr84:
I was told the same for skyrocket i727
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] Igotsanevo4g:
That's assuming it'll be possible to use tmo without being a tmo subscriber.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] Tenkie:
oooh... this is my first LTE phone so I was unaware that it may be hardcoded into hardware...did the the s2 sh!trocket not have the ability to toggle LTE on/off? (even after flashing custom ROMs and tweaks?)
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] SaHiLzZ:
I have PM'd a guy who thinks it is easy enough. http://xdaforums.com/showpost.php?p=28681575&postcount=3
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] m3x1cant7863:
I'll donate 40$....more if needed to get this going...​
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] m3x1cant7863:
Did he give you any word if he would do it or not?
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] ysr84:
I am trying to be optomistic however so many threads conclude its not possible.

---------- Post added at 11:15 PM ---------- Previous post was at 11:06 PM ----------

Hi guys,

tomin.fhl a member at xda came up with s2 mod.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] SaHiLzZ:
He was unavailable at the moment. I have asked him to attempt this when he gets back.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] m3x1cant7863:
do you have a link?
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] ysr84:
http://xdaforums.com/showthread.php?t=1725820&page=2

http://xdaforums.com/showthread.php?t=1739529&page=4
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] SaHiLzZ:
Sorry that means what?
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] ysr84:
Means some people are saying its not possible to do... I am still optomistic but from reading different threads I was informed that there is a difference of hardware which would make it impossible to make i747m work with tmobile 3g.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] }{Alienz}{:
Any developer working on this?
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] ultravioletnanokitty:
This is likely of interest to everyone posting in this thread: http://xdaforums.com/showthread.php?t=2042128
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] wavestar92:
I'll donate $20 if someone is successful.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] ysr84:
yes
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] Jasonliw93:
possible solution?

Who has the balls to give this a try?

http://xdaforums.com/showthread.php?t=2068041
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] SaHiLzZ:
OOoo. Interesting. That would be awesome if it worked.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] SaHiLzZ:
Anyone willing to share a nv backup of T999 minus line 550 (your imei)?

Backup can be taken with http://xdaforums.com/showthread.php?t=1804117
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] Zehlek:
Thread says for note 2. We need a back up for s3 first correct?
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] SaHiLzZ:
Restored a T999 qcn on i747, won't connect to AWS (mobilicity in canada), and only edge for Rogers.

Restoring my own i747 qcn backup gives back LTE on Rogers.

I can also confirm that IMEI number didn't change on T999 restore.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] ruvort:
Could you share that backup?
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] SaHiLzZ:
I will have to ask my source, but most likely not at this time.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] SaHiLzZ:
BIG Update

Update: Tried it again, and left the phone alone for about 10 mins. Registered on Mobilicity, however couldn't make any calls. This is a voice only sim. Will try with a Wind sim with voice+data later.

Also, on a reboot, it hasn't registered back to Mobilicity. Wondering if the effects last a single reboot? :confused:
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] SaHiLzZ:
PROGRESS!

I was only able to make 1 successful phone call on Wind AWS network, and browse the internet for few minutes before it died. Even though the network stays connected, I am unable to browse the internet or make outgoing phone calls anymore. Also the network signal strength fluctuates from full bars to 1, without the ability to use it.

On a restart, the phone doesn't connect to Wind AWS network at all, and goes to Emergency calls only.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] shoestar:
That phone actually supports that band out of the gate. Flashing anything from that phone will likely brick your phone.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] SaHiLzZ:
I have already tried the qcn backup of t999 and it didn't brick. Unless you have proof this is heresay.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] SaHiLzZ:
Can I get couple testers PM me? I am waiting on a qcn modification but I can get started on verification. Just to be completely upfront you need to be able to run QXDM/QPST tools. Have backups via qpst, and nv-writer tools, and can't hold me responsible for any damage to your phone. If you agree, PM me, and I will shoot over some files and instructions to get this going.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] Cinemaphile:
Did you have to do something different than what you had already done?
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] SaHiLzZ:
Update 1/12/13 - Only need to modify nv item 1877 to 115868544 to enable aws, however AWS capability are LOST on restart. NV values are being written over somehow.

Use NV Browser or nv-writer to modify:

01877 (0x0755) - OK

80 03 E8 06 00 00 00 00 00 00 00 00 00 00 00 00 | €.è.............

00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ................

00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ................

00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ................

00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ................

00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ................

00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ................

00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ................

**************************

Once I installed Rogers sim card, the phone won't connect to Wind anymore. So in interest in moving this forward, I am posting my files and directions.

WARNING: Messing with NV parameters can brick your device. I am not to be held responsible for any damage whatsoever.

Borrowing heavily from sjravi's post at http://xdaforums.com/showthread.php?t=2068041

Method 1 (NV Way):

Things needed:

0. Sim unlocked i747.

1. NV back up tool from this post: http://xdaforums.com/showthread.php?t=1804117

2. NV backup from a T999. i747_awsmod.zip attached in this post

3. NV backup of your i747 device

4. QXDM tool from http://www.mediafire.com/?4s0bckjefni3jnc

Its also good to take NV backup using QPST tool before changing anything on the device. http://xdaforums.com/showthread.php?t=1801997

Steps:

1. Take a NV backup of your device using the tool mentioned above. NV parameters from 0 to 7225 are needed.

2. Compare T999 NV file provided with your device's to find the needed NV parameters for AWS. I found the following with my own i747. Your findings should be similar to below

4141-4156

5468

5474

6884-6888

6890

6895-6898

6903-6906

7167-7198

7207-7224

3. Use QXDM tool to enable these parameters. Each parameter in the above list needs to be enabled. Once the NV's are enabled, it cannot be disabled so be careful. To enable select the NV item and click write in NV browser and this has to be done for all the needed nv parameters.

4. Once all the parameters are enabled the NV file in this post can be restored on to your device to enable AWS.

If you face issues with data rate and stability, restore your device original qcn on top and change the value of 01877 to 115868544 in NV browser of QXDM or use 80 03 E8 06 in the text file and write it to device. DC HSPA or 42 Mbps will be disabled after this. File is found in zip.

Method 2 (QCN Way):

Use software download tool in QPST to restore the attached qcn file inside i747_awsmod_noimei.zip. Tool is at http://xdaforums.com/showthread.php?t=1801997

***

Please restart your S3 with TmobileUS/Wind/Mobilicity/Videotron sim card, and post your findings here, about which method worked for you, if you have T-Mobile 1900 coverage already then your results will be muddying the census, unless there is a way to force UMTS 1700 only.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] sjravi:
To force device to use only 1700 *#197328640#

Umts > debug > phone control >network control > band selection > wcdma band pref

Select which ever band you want to force it to.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] gatorlee:
Just curiously along with establishing 3g, would it be possible theoretically to get at&t lte working on an i747 with a tmobile sim by changing the the mac address and the nv items? I mean essentially isn't the current lte system just a giant wifi network which users are let in by mac addresses? Pardon my naivety if this is not the case.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] ysr84:
Keep up the good work and soon you will have success!

---------- Post added at 06:48 AM ---------- Previous post was at 06:13 AM ----------

Sahil this is what i found for my S3 At&T (Rogers) Nv Files After reading it..

01877 (0x0755) - OK

80 03 E8 04 00 00 00 00 00 00 00 00 00 00 00 00 | €.è.............

00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ................

00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ................

00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ................

00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ................

00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ................

00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ................

00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ................

Compared to Note 2 files posted by sjravi..

01877 (0x0755) - OK

80 03 E8 06 00 00 00 00 00 00 00 00 00 00 00 00 | €.è.............

00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ................

00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ................

00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ................

00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ................

00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ................

00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ................

00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ................
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] SaHiLzZ:
01877 (0x0755) - OK

80 03 E8 06

is correct, as per T999. Don't use Note 2 files.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] LaseOfFury:
I have used method 2 for my i747M S3 (Bell). I cannot do 1 as the Qualcomm software wont install (it wants IE6+, it cannot see IE10). The issue im having is that i used to be able to see (WIND) at my home. but now its very rare and never connects. But i can get onto (WIND Away) just fine. I don't know exactly what the issue is, even with my original NV restored, the same thing happens.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] ysr84:
Sahil try wind sim card... i have noticed better reception....just a thought
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] SaHiLzZ:
I have a wind sim card. The phone got the signal perfectly ok. On a reboot, no more Wind Home!
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] sjravi:
Changes to NV items are lost after reboot, looks like NV's are rewritten during boot up.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] sjravi:
Update: change nv item 1877 to 115868544 to enable aws in I747(lk3 stock rom). Change is lost after reboot

Do not change or enable other nv's, those might impact device performance.

Sahil can you please update the post
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] ysr84:
Hi Sjravi,

How to reflect the change...Change the bolded items?

01877 (0x0755) - OK

80 03 E8 04 00 00 00 00 00 00 00 00 00 00 00 00 | €.è.............

00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ................

00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ................

00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ................

00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ................

00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ................

00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ................

00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ................
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] ysr84:
I tried to do the qcn switch in qpst... it did not work for wind ;(... i also tried to change the nv iteam as told by sjravi... still nothing
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] sjravi:
Change to 80 03 e8 06 and restore only this.

Before restoring change to airplane mode.

Qxdm can also be used to change this value.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] elvin9:
which is the benefit for my att galaxy s3
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] ysr84:
I tired the aws methoda above on my s3... i got the wind home for about a minute or so and then no signals at all.... i Have flashed the modified text file throuh nv reader writer...

I have also noticed upon restart the nv rewrites and values are back to stock.....
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] SaHiLzZ:
Yeah, so we need to figure out a way to work around this overwriting by the phone.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] ysr84:
I have asked an expert lets see what happens....
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] ysr84:
Sahil did you get the qcn from a T999 model from Wind or mobilcity? Or was it from T-Mobile???
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] SaHiLzZ:
Re: [WIP][BOUNTY] Enable 3G on 1700MHz for ATT Galaxy S3 i747 - Currently $1025.65

Qcn from Tmobile T999 and nvbackup from wind T999V.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] ysr84:
I think what we should try is the T999v's qcn from Wind or Mobilcity.... please someone check and post results
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] repherb:
AWS... hope i am seeing this right

did the adb commands... came up with this:

+COPS:

(1,"TELUS","TELUS","302220",7),

(2,"Koodo","","302220",2),

(3,"CAN Rogers Wireless Inc.","ROGERS","302720",7),

(1,"WIND","WIND","302490",2),

(3,"CAN Rogers Wireless Inc.","ROGERS","302720",0),

(1,"Bell","Bell","302610",2),

(3,"CAN Rogers Wireless Inc.","ROGERS","302720",2),

(1,"Bell","Bell","302610",7),,

(0,1,2,3,4),(0,1,2)

so I can safely assume that i can go to Wind... but news reports say that Lacavera has been bought-out for a new venture and Wind may be snapped up next year by one of the big 3....
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] SaHiLzZ:
Sure we are able to connect to Wind, but it gets over-written on reboot.

Anyone able to contact someone on XDA that knows more indepth how NV-tools work and prevent over-writing?
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] ysr84:
Any updates??? Anything?? so close but yet sooo far....
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] edskii:
Yesterday I performed NV value change to what was suggested by sjravi using NV Browser and applied it to a phone. I couldn't tell the actual result, because where I live TMobile have upgraded their equipment to work on 1900MHz 4G band, so I get excellent 4G all the time. I'm on TMobile $30 4G prepaid plan with ATT Galaxy S3 unlocked.

Today I worked in Bronx area where only EDGE was available during last 2 weeks, but my phone picked up strong and steady 4G signal today, which is 1700MHz for sure. I was able to get signal even in the basement, where Sprint and other ATT phones didn't get signal at all. Speed tests showed 5-8Mbps down. I was able to make calls through GrooveIP with excellent sound quality, internet browsing worked, skype worked. As soon as I rebooted a phone, which happened after 5 hours of using it on 4G, the signal was lost and I got back to EDGE. Then I realized, after I applied the settings yesterday, I didn't reboot a phone. Anyways, it proved that S3 is capable to work with TMobile 1700MHz band to get 4G signal.

So, it works like tethered jailbreak on iPhone. Everything good until you reboot it. Now, the question is: Is it possible to make an executable file that writes proper NV value on each reboot?
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] willbs94:
Re: [WIP][BOUNTY] Enable 3G on 1700MHz for ATT Galaxy S3 i747 - Currently $405.65

Or a way to keep the values from changing?
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] ysr84:
That is the only problem that the nv values change to deafult upon restarting the device...
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] iamone007:
Worked for me....!!!

I played around with NV items and it worked for me...... using my I747m from Bell with Wind.... getting HSPA+ signal strength..... I am using it for almost a week now and I can confirm it works for me, thanks to all above posters and to all others whom above posters have referred.... I did not follow all the steps mentioned in above post but still works for me.

1 thing I would like to mention, which is a bit strange also as they say upon restart it re loads default NV values.... when i play with NV parameters and update them it does not work. I can not connect to any network or see any network, but when I restart my device and manually choose WIND HOME it connects and works. I tired to restart again but at that time it did not work but I was busy and I did not try to restart my phone again and check.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] iamone007:
2nd reboot does not work

Hello everyone,

I tried to reboot it for second time and now it is not showing Wind Home anymore, all 3 Wind Away networks only.

1 thing came to my mind, we are changing NV Values and most of the time some checksum is attached with these values. so when we change one value, we need to update checksum as well. So until we restarts it works fine, but when we restart, auto check looks for checksum (which is wrong for sure as we changed something) Software thinks some NV value is corrupted and it loads default values from backup storage and we loose NV item 01877. I am not sure if this is the case but some expert should look into it.

I would like to add is in the DIY from SaHiLzZ he has mentioned about using QXDM and changing many values and enabling many parameters. I did not follow that but just updated nv item 01877 and it workd. so Initially it does not work, but upon restart it works and stops working after another restart. we do not need any other software than NV backup tool, no QXDM, no need to take full backup of NV items from 0 to 7225 (I have taken full NV backup just in case). just update item 01877, 04 to 06 and it works.

As mentioned by many others, so far it works like tethered jailbreak for Iphone, everything is good until phone is restarted. If some user finds it difficult to follow all the posts and wants me to write a very simple DIY with everything in just 1 post with minimal steps. I would like to do that to help everyone out while experts search for final solution.

Thanks everyone.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] sjravi:
Re: [WIP][BOUNTY] Enable 3G on 1700MHz for ATT Galaxy S3 i747 - Currently $405.65

I tried changing few other nv's and those changes were not reverted and so there is no checksum check being done. Only 1877 is being reverted to original value.

Nv's are stored in modemst1 and modemst2 partition. Any change in nv will re hash both these partitions.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] iamone007:
Hmm... I am not able to understand one thing, after changing 1877, I need to restart my phone and after restart is it still 06. but when I connect with Wind Home and then I restart, it is reverted back to 04.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] ciorofleasca:
Using jb LK3

1. Dial *#197328640#

2. Choose [1] UMTS

3. Choose [1] DEBUG SCREEN

4. Choose [8] PHONE CONTROL

5. Choose [7] NETWORK CONTROL

6. Choose [2] BAND SELECTION

7. Choose [2] WCDMA Band Preference

8. Choose [3] WCDMA 1700

I have 4g on t-mobile using this even after restart.

I can upload a pic if needed.

I've tested with http://xdaforums.com/showpost.php?p=31170889&postcount=108 and get

+COPS: (1,"T-Mobile","T-Mobile","310260",2),(1,"T-Mobile","T-Mobile","310260",0)...

Is there something I don't understand about what you guys want?
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] SaHiLzZ:
You are most likely in a TMobile 1900 zone, and catching on to it after a restart... Weird..