[megasound]

For those who didn't know

Use this code in Diagnosis: *#321647335
After you choose new CSC it will ask for Hard Reset.

M

[DBDev]

What is CSC?

[Loco5150]

Wow! CSC= country/carrier specific code

[mary beth hale]

what does changing csc allow you to do?

[IlyaBu]

This is a very cool find! Q1) does anyone know what all of the carrier abbreviations stand for? TLS = Telus, RWC = Rogers, BMC = Bell, BWA = SaskTel, any idea what FMC (which is the default) stands for? Is there any chance FMC = "unbranded"? Q2) based on answer to Q1, would selecting FMC enable me to then finally get hotspot / internet sharing working on T-Mobile in the US, which I've been unable to do regardless of anything else I've tried? I'm somewhat unwilling to reset my phone to find out if this is the case or not so hoping someone will know.

[IlyaBu]

Answered my own question; FMC = Fido. Apparently there is no way to unbrand the phone using this setting. That said INTERNET SHARING NOW WORKS WITH T-MOBILE! WOHOO!

[IlyaBu]

Spoke too soon. Choosing Fido disables LTE. Now trying Bell and will also try Rogers, see if any of those have the magic combo of LTE AND Internet Sharing.

[IlyaBu]

And utter failure; both Rogers and Bell enable LTE but disable Internet Sharing on T-Mo. Sigh.

[Loco5150]

I would strongly assume that the unbranded csc is also there. Any with LTE enabled I dont know, but probably?

Do you see DBT, thats probably german unbranded.

Also there is menu for the LTE bands. Maybe can activate that separately?

[IlyaBu]

The only CSC choices using the above method are TLS, FMC, RWC, BMC, BWA, so no option to unbrand / no carrier. The only carrier with which internet sharing worked was Fido, but then LTE didn't even show up as an option under Settings, Cellular (highest available speed setting was 4G, regardless of LTE bands settings in the Diagnosis app). Would love to hear any suggestions / bright ideas anyone might have.

[Leif Perjus]

Hi, thanks for info.
Can i change csc-code (to what code) and then get GDR2 over the air ? My AtivS is sim-free unbranded GT-I8750 with csc NEE

[Loco5150]

The only CSC choices using the above method are TLS, FMC, RWC, BMC, BWA, so no option to unbrand / no carrier. The only carrier with which internet sharing worked was Fido, but then LTE didn't even show up as an option under Settings, Cellular (highest available speed setting was 4G, regardless of LTE bands settings in the Diagnosis app). Would love to hear any suggestions / bright ideas anyone might have.

Ok its so few of the csc's present. I wonder what happens if you try to flash the device with unbranded firmware, then fiddle around with the csc?

Fast google found this at XDA "There is a code in Diagnosis to change CSC. But it must be avaible in ROM your flashed. And changing CSC causes Hard Reset"

Seems that there is actually some bits and pieces of information regarding this when searching the web. Also the GDR2 firmwares are floating around and available for flashing.

[Bryan w]

The only CSC choices using the above method are TLS, FMC, RWC, BMC, BWA, so no option to unbrand / no carrier. The only carrier with which internet sharing worked was Fido, but then LTE didn't even show up as an option under Settings, Cellular (highest available speed setting was 4G, regardless of LTE bands settings in the Diagnosis app). Would love to hear any suggestions / bright ideas anyone might have.

im on tmobile as well but sim defaults to epc.tmobile.com so when i attempt to restore from backup after wiping I dont have internet connection. have to manually change to fast.tmobile.com. would test if i could successfully restore from backup.

[mightyrobert]

Hi, thanks for info.
Can i change csc-code (to what code) and then get GDR2 over the air ? My AtivS is sim-free unbranded GT-I8750 with csc NEE

Mmmm...it would be great :)
Anyone has tried this? Is it posible? Does it depend of the firmware?

[IlyaBu]

You can use the Diagnosis app to set band preferences to always connect to 4G first. This seems to carry across hard resets, and thus your phone will connect to 4G after a reset and epc.tmobile.com will work to start the restore.

[IlyaBu]

The only firmware I've been able to find is for the I8750, not the T899M which is what I have. If anyone has a pointer to unbranded firmware for the T899M I'd love to try it.

[anon(7917514)]

Hi, thanks for info.
Can i change csc-code (to what code) and then get GDR2 over the air ? My AtivS is sim-free unbranded GT-I8750 with csc NEE

I tried multiple CSC on the weekend with my spare handset and of the CSC that I tested OTA update was not available. I suspect that a combination of CSC and IP address is will enable the update.
i.e. my IP address originates from Australia and a CSC that I tested was German or United Kingdom and the 2 do not match etc

[tooly26]

The update is specified to region and CSC code..



Sent from my GT-I8750 using Tapatalk

[Bryan w]

You can use the Diagnosis app to set band preferences to always connect to 4G first. This seems to carry across hard resets, and thus your phone will connect to 4G after a reset and epc.tmobile.com will work to start the restore.

just confirmed that is not the case after hard reset.

I'm actually stuck and unable for my sim to get on tmobile's network.

any ideas?

[IlyaBu]

not sure what to say; this worked for me across multiple CSC changes and resets. You sure something else isn't going wrong for you?

[Bryan w]

not sure what to say; this worked for me across multiple CSC changes and resets. You sure something else isn't going wrong for you?

haha i'm wandering the same. everything was working fine. I changed the bands to try to get a better signal in my area which was gsm 850 but shortly after I'm unable to connect to network. just picked up a new sim today and still can't connect. complete bummer.

[Bryan w]

not sure what to say; this worked for me across multiple CSC changes and resets. You sure something else isn't going wrong for you?

I was able to get my phone working after going into the Diag tool and choosing to rebuilding nv and rebooting and everything was working. didnt have to set any APN's which I had to do before. hoping this is a long term fix. thanks for everyone's input.

[Villain]

This actually worked and perfect!

unlocked rogers on bell mobility
- hated the Rogers splash logo on start up (minor lol)
- tons of rogers apps and bloat (all removable mind you so minor)
- everything worked flawless except "internet sharing" which drove me foolish and tried everything.

Diagnostic tool ##634#
then used *#321647335

then showed
TLS - Telus
RWC - Rogers
BMC - Bell
BWA - SaskTel
FMC - Fido

mine was RWC - Rogers so I switched it to BMC - Bell

phone rebooted and factory reset and when it finished and loaded up no Rogers splash screen, had Bell apps/bloat, Bell sites save in the browsers favorites and WiFi/internet sharing work first shot! displays H+ instead of 4G when I lose LTE (rogers and bell display it different) even under settings/about it now shows "Bell Mobility Inc" as the carrier.



with that being said... Noticed those are all Canadian providers (TLS, RWC, BMC, BWA, FMC) so anyone who owns an unlocked Rogers device they should do this and convert over to Bell BECAUSE Rogers blocks wifi sharing/internet sharing/hotspot and charges an addition $5 fee for WiFi sharing to work. I know that because I worked for RIM overseeing a rogers blackberry tech support center. an added apn besides the wapuser and internet.com apn is required in Rogers network program Vision 21 (Bell doesn't have this fee)

[Windows_Phone_Joe]

Here's how I got my Ativ S T899m from Telus working on T-Mobile with Internet sharing:
Set cellular to LTE then Network Selection to Automatic. Make sure you download the Samsung "apn" app. (Not the "APN" for Verizon. After it's installed, go to settings and look for apn. Once there, uncheck Automatic APN and select your Active APN to the Phones Carrier. After that, under Edit APN, you should have all the services available. You should have one for data, one for MMS and one for Tethering. Edit the APN's with your carrier apn's and rename them accordingly. Exit and turn on Internet Sharing. Restart your phone, and check "apn" again. This time it should show your own carrier. Try turning on your internet sharing again just to test. Good luck!

[IlyaBu]

Holy f'ing ****e, you are a genius Joe! I can't believe this works after all the other crazy crap I've tried which didn't work. PM me as I for sure owe you some token of gratitude!