Hi I read quite a bit about our CSC importance and still am unclear of a few things if you kind people could help out. I have owned g935f and g930f and ran both with roms and wrong CSC and everything always seems to work fine. My phones are from a small us carrier who's specific firmware doesn't make it to sammobile or elsewhere. I should be on a USA CSC but there are none for this device that I can find. Right now due to roms I've flashed I am on a Nederland CSC. My carrier is called GCI.
Question
1. I don't need Volte or Wi-Fi calling and my GPS/ modem seem to work fine even on very long road trips so am I missing out on anything by running wrong CSC?
Since the 930F never released in US you'll never find a US CSC for it, there is a flashable zip somewhere which I think has custom US carrier CSC's but that requires TWRP to be on your device which voids warranty.
If you don't need VoLTE or VoWIFI and your network connectivity is fine then I wouldn't worry about it. CSC can also tell the device what bands to use, which can impact 3G/4G performance, so if your 3G/4G is slow it might be worth experimenting with other CSC's, if not then no need.
Related
So it seems that most users are flashing G930U firmwares on their G930X devices so that they can debloat and all the other good stuff. But I'm looking to do the reverse.
Has anyone flashed G930T firmware on G930U hardware? I would like to do so for a couple reasons:
1) I would like VoLTE to work
2) I would like 4x4 MIMO and Carrier aggregation for T-Mobile bands
3) I would like T-Mobile WiFi calling
4) I would like to get faster (monthly-ish) updates from T-Mobile vs the slow updates from Samsung.
Anyone have experience with this and get it to work? It seems like it should be possible, I just can't find any threads about it.
Cross-flashing firmwares may work but you have to make sure you have the right Modem and Bootloader for your phone, otherwise you risk getting a loss of signal or worse-- hard bricking the device.
Note: G930x is the demo-unit of the S7, hence it has no connectivity options whatsoever.
Regarding flashing "carrier" based firmwares, it won't work. Your number would have to be registered to their network in order for you to receive the updates.
Good luck
Revontheus said:
Cross-flashing firmwares may work but you have to make sure you have the right Modem and Bootloader for your phone, otherwise you risk getting a loss of signal or worse-- hard bricking the device.
Note: G930x is the demo-unit of the S7, hence it has no connectivity options whatsoever.
Regarding flashing "carrier" based firmwares, it won't work. Your number would have to be registered to their network in order for you to receive the updates.
Good luck
Click to expand...
Click to collapse
Yeah, I've read some reports that even with the correct radios that signal strength is reported lower, just strange to me.
And regarding G930X, I didn't mean the demo unit specifically, I meant the X to be a generic place holder for the different carrier devices (G930A for AT&T, G930V for Verizon, G930P for Sprint, G930T for T-Mobile, etc.). Most people want to flash the G930U firmware on their carrier devices to remove bloat, but I want to go the other way to pick up T-Mobile features.
And lastly, when you say "your number would have to be registered on their network" to receive updates. Are you talking about IMEI or phone number? I would have a T-Mobile phone number and SIM to go with the T-Mobile firmware.
thejaycan said:
So it seems that most users are flashing G930U firmwares on their G930X devices so that they can debloat and all the other good stuff. But I'm looking to do the reverse.
Has anyone flashed G930T firmware on G930U hardware? I would like to do so for a couple reasons:
1) I would like VoLTE to work
2) I would like 4x4 MIMO and Carrier aggregation for T-Mobile bands
3) I would like T-Mobile WiFi calling
4) I would like to get faster (monthly-ish) updates from T-Mobile vs the slow updates from Samsung.
Anyone have experience with this and get it to work? It seems like it should be possible, I just can't find any threads about it.
Click to expand...
Click to collapse
Revontheus said:
Cross-flashing firmwares may work but you have to make sure you have the right Modem and Bootloader for your phone, otherwise you risk getting a loss of signal or worse-- hard bricking the device.
Note: G930x is the demo-unit of the S7, hence it has no connectivity options whatsoever.
Regarding flashing "carrier" based firmwares, it won't work. Your number would have to be registered to their network in order for you to receive the updates.
Good luck
Click to expand...
Click to collapse
Hi Mate
You may have better luck asking in the right forum , this is for the international version , check here:
https://forum.xda-developers.com/tmobile-galaxy-s7
As far as I know all Snapdragon versions are compatible so what you say it should be possible , all the features you mention are CSC related , in other words in order to enable them you mus have the right CSC ( in your case TMB) , this also applies for the updates, you receive updates accordingly to your CSC....
Check for more info in the right forum
MAX 404 said:
Hi Mate
You may have better luck asking in the right forum , this is for the international version , check here:
https://forum.xda-developers.com/tmobile-galaxy-s7
As far as I know all Snapdragon versions are compatible so what you say it should be possible , all the features you mention are CSC related , in other words in order to enable them you mus have the right CSC ( in your case TMB) , this also applies for the updates, you receive updates accordingly to your CSC....
Check for more info in the right forum
Click to expand...
Click to collapse
Oh geez, well that's a bit embarrassing as I've been on XDA for awhile. I thought this might have been the general S7 forum, you know one for the Galaxy S7 regardless of carrier. Thanks for the tip. I'll move it over to a different one.
thejaycan said:
Oh geez, well that's a bit embarrassing as I've been on XDA for awhile. I thought this might have been the general S7 forum, you know one for the Galaxy S7 regardless of carrier. Thanks for the tip. I'll move it over to a different one.
Click to expand...
Click to collapse
No big deal , just wanted to point you in the right direction.....over here you may not get the right answer.
Good luck
I have a SAMSUNG-SM-G930A that was on AT&T . Baseband is G930AUCS2APE1 I want to put the T-mobile image in so I get Wifi Calling since my carrier is T-Mobile. I need help in finding the right guide and firmware.
ElevyNJ said:
I have a SAMSUNG-SM-G930A that was on AT&T . Baseband is G930AUCS2APE1 I want to put the T-mobile image in so I get Wifi Calling since my carrier is T-Mobile. I need help in finding the right guide and firmware.
Click to expand...
Click to collapse
just download the latest tmo firmware from updato.com and flash via odin.
micallan_17 said:
just download the latest tmo firmware from updato.com and flash via odin.
Click to expand...
Click to collapse
Exactly - other than the porting steps (which you don't need the phone/handset itself for) and the SIM install, that is literally it between NA carriers. (Even the infamous "network-locking" only applies to that single carrier and its MVNOs - and there are quirks with that, and rather interesting ones; my S7 is an ex-VZW S7 - with a network-locked (VZW) IMEI. Tracfone is a dual-network MVNO - VZW and T-Mobile; while the phone would NOT work on the VZW half of Tracfone (VZW network-locked IMEI), it works quite well on the UnCarrier's network with a nano-SIM change - with the same IMEI. Never mind that there ARE feature GAINS just going to the UnCarrier compared to BigRed - such as VoLTE and LTE over WiFi - neither of which VZW offers at all.
Then there IS the reality that VZW has no love for non-stock firmware; T-Mobile could care less. (T-Mobile is, in fact, the only one of the Big Four that can make that claim - Sprint has just clamped down harder than BigRed on non-stock firmware.) Now that there is actually a non-stock firmware scene for the Snapdragon S7 and later - it is actually bringing some serious respect toward the UnCarrier - which it seriously needed to be honest.
So I bought two supposedly unlocked Samsung S10e logic boards, because I had two units with defective logic boards and wanted to make them work.
They are both BST, but I wanted to flash XAA on them to make sure there wasn't any branding.
Unfortunately, after having flashed one of the devices, it is set to emergency calls only, and will not register to a network. It is capable of getting a signal (full bars) as well as seeing the available operators, but cannot register on any of them. The SIM card used works, and I have checked with two different blacklist checkers and both of them say the device is NOT blacklisted. The APN settings are also correct, so I have a hard time understanding what the issue is.
I did not test the device before flashing to see if it could make calls, but I did test the second device and it works perfectly. I have not flashed this second device from fear of also making it not register on the network, because I've never had such a problem flashing a unbranded firmware on devices.
The baseband version for both is G970USQS6GUI1.
The only difference I can quickly see is the service provider software version. The non-working device has it as "SAOMC_SM-G970U_OYN_XAA_QQ_0008 XAA/XAA/XAA" where as the working device has it as "SAOMC_SM-G970U_OYN_BST_RR_0010 BST/XAA/BST".
I have since tried putting back the BST firmware, using the BL, AP, CP, CSC (non-home) as well as USERDATA, but nothing changed.
What could I be missing ?
Thank you
Hey,
Just got the S22Ultra today. I see that messages is now the default, which is good. But it appears RCS is now specific to AT&T only? When before it worked with anyone who had Google messages.
Has anyone else encountered this?
AT&T is known for having an implementation of RCS that doesn't go outside it's network.
Why? Don't ask me...
Solution: Install the "U1" firmware
Da_G said:
AT&T is known for having an implementation of RCS that doesn't go outside it's network.
Why? Don't ask me...
Solution: Install the "U1" firmware
Click to expand...
Click to collapse
Would we lose WiFi calling / VoLTE / Visual Voicemail with that?
In the past there was difficulty using non carrier branded firmware and losing those particular features...
However at this point in time, VoLTE is a requirement to be connected to AT&Ts network.. and wifi calling works great I'm running U1 on AT&T Unlimited Elite with both features working well
Da_G said:
In the past there was difficulty using non carrier branded firmware and losing those particular features...
However at this point in time, VoLTE is a requirement to be connected to AT&Ts network.. and wifi calling works great I'm running U1 on AT&T Unlimited Elite with both features working well
Click to expand...
Click to collapse
Which csc did you choose if you don't mind me asking, for the U1 firmware?
I have the S22 Ultra on U firmware with AT&T Unlimited Elite Plan as well and my 5G is amazing, sometimes even faster than my wifi.
Do you use USC or ATT for the U1 firmware's csc. I'm going to download from Frija and flash tomorrow. Hate the bloatware.
I forgot to mention that Visual Voice-mail works 100% as well. I used the U1 firmware posted here which I believe is multi-CSC. Generally speaking, if you punch most CSC into a Downloader like Frija, it will pull the same firmware zip file (U1) - there are some exceptions like Thom Browne which use a custom zip. Wifey and I were having problems sending photos via Text / "Advanced Messaging" on "U" firmware. I flashed both our phones to U1 (wow, flashing via USB-C cable takes 1 minute to flash the 7 gig firmware at 10gbps, pretty nice)
"U1" comes with both Samsung Messages and Samsung's customized Google messages build.
Samsung Messages still tries to use Advanced Messaging on AT&T, so that's out of the picture on "U1" as well.
But, Google Messages works great using Jibe as the backend for RCS as usual.
Da_G said:
I forgot to mention that Visual Voice-mail works 100% as well. I used the U1 firmware posted here which I believe is multi-CSC. Generally speaking, if you punch most CSC into a Downloader like Frija, it will pull the same firmware zip file (U1) - there are some exceptions like Thom Browne which use a custom zip.
Click to expand...
Click to collapse
Thanks! What about 5G?
Also, did you do a full wipe going from U to U1? Or used HOME_CSC to keep data.
5G works great. AT&T gatekeeps 5G via a combination of factors:
5G Capable Plan on account
5G IMEI reported from connecting device
5G Capable APN connected from device (enhancedphone, nrphone, nrbroadband)
Firmware doesn't seem to affect it in my experience.
The "U1" image posted does not contain a HOME_CSC, so maintaining data is not an option this time around. I would still recommend a factory reset immediately prior to changing firmware from U1<-->U, while it does work, I feel like that introduces a tendency to glitchiness.
S22 uses a nice 5G modem that brings a beefy featureset, it has notable diversity and carrier aggregation improvements that seem to be shining through nicely on AT&T. I notice different bands being connected than typical with my other devices. For example I'm getting 10mhz of Band 29 downlink CA which is bumping speed test results nicely.
The reason I got the carrier locked version was to not lose those features. It was an issue in the past. It's nice to know it's been resolved.
It looks like a work around is being considered. A lot of ppl are complaining about the RCS issue in messages. I'll wait a while before I flash, but thanks for that option.
Da_G said:
5G works great. AT&T gatekeeps 5G via a combination of factors:
5G Capable Plan on account
5G IMEI reported from connecting device
5G Capable APN connected from device (enhancedphone, nrphone, nrbroadband)
Firmware doesn't seem to affect it in my experience.
The "U1" image posted does not contain a HOME_CSC, so maintaining data is not an option this time around. I would still recommend a factory reset immediately prior to changing firmware from U1<-->U, while it does work, I feel like that introduces a tendency to glitchiness.
Click to expand...
Click to collapse
Is the U1 firmware the USA unlocked?
U1 firmware is world-wide unlocked, it includes all the necessary customizations to connect the bare minimum services + enhanced features (carrier video calling, RCS, visual voicemail, APN settings)
U1 doesn't come with the carrier specific "bloatware" and branding.
U has all that stuff that no one wants. In the past we had to use that flavor to enable carrier features as crispy1805 mentioned. No more! Now we can enjoy the bloatware free goodness.
It seems to be a global issue. I've been monitoring other forms: https://forums.att.com/conversation...2c097b3be6?commentId=62166982bd69402c097b3ed2
Hello and hope you guys are well, and I apologize if my post is lacking any info or in any way as I'm still new here.
I have an SM-S908U1 with XAA/XAA CSC code, I hope someone can help me with which CSC should I patch it with to fix poor network issue (poor quality call, poor network signal and barely working LTE/4G).
To give more context, I live in Morocco, my phone used to work fine, I'm not sure what CSC code it has before as I only learned a bit about what CSC is after the research I've done when I had this issue a couple weeks ago.
I travelled to Turkey and used a Turkish SIM card there, it worked fine. I also installed the official January update while I was there.
I came back home on January 23rd, and put back my Moroccan SIM card and noticed the network issues right after, used different SIM cards from different operators, all with the same issue.
I tried all the possible fixes, from resetting network settings to factory resetting my phone, and I even downgraded android to November's security patch version (using ODIN and a ROM for SM-S908U1 XAA) in case the issue was caused by the newest update. None of those worked. I just updated the phone the normal way to January version again.
After a lot of research online, I now think the guy I purchased the phone from maybe patched the phone but whatever he did was overwritten while I was abroad and/or maybe with the software update.
Now I wish someone can point me towards what CSC code should I patch (if any), Morocco's CSC is MWD but it's for SM-S908E with Exynos and I'm worried patching my phone with that one wouldn't work. And I have no idea if any of the other CSC codes for SM-S908U1 would solve the issue or if I have to do something else other than changing CSC.
Thank you for reading all of this even if you have no clue about it, and I'd so appreciate any help pointing me to in the right direction.
You cannot flash Morocco or European CSC on US S22U. However, you can unlock all LTE & 5G bands using the service menu which should help with your connection issues outside US. See this guide.
peacey8 said:
You cannot flash Morocco or European CSC on US S22U. However, you can unlock all LTE & 5G bands using the service menu which should help with your connection issues outside US. See this guide.
Click to expand...
Click to collapse
Thank you very much, that sounds like it would solve my issue, I'm going to try that today and post an update later.
peacey8 said:
You cannot flash Morocco or European CSC on US S22U. However, you can unlock all LTE & 5G bands using the service menu which should help with your connection issues outside US. See this guide.
Click to expand...
Click to collapse
I did all the steps in that guide and unlocked all LTE and 5G bands, I can now see LTE+ (instead of just LTE before) but the network issue is still present, even with LTE+, internet is very slow (slow ping and 1~2Mb/s speed compared to 40Mb/s on other phones in same location), call quality is also still bad, hope you and someone has a clue what might be the problem.
Hi @peacey8, sorry to bug you again. I followed your guide and enabled all bands and still have the poor network issue, when I compared my list of bands to your screenshot, the only thing that is different is that on yours it's showing: CDMA: w HDR, on mine it's CDMA: w/o HDR, I wonder if that could be the reason.
If I go to CDMA band preference to activate With HDR, it says "NOT SUPP".
Thank you in advance and please let me know if you have any ideas.