yashsingh1/xdaforums huggingface dataset:
[Samsung Galaxy Note 8 Questions and Answers] Kalm_Traveler:
If it still shows TMB like that, that means either the 2 files in your EFS partition were not changed (I think you have to change them manually, IE Odin won't change them), or your /system/ partition was not touched and the OMC folder contents are still there for TMB.
[Samsung Galaxy Note 8 Questions and Answers] jooniloh:
can confirm odin didn't touch. I had to flash your skc zip first before doing any efs clearing/odin flashing.
[Samsung Galaxy Note 8 Questions and Answers] Kalm_Traveler:
I'm somehow still using the 950F bootloader from NEMESIS ROM, so I am trying to figure out how to get rid of it so that I'm actually on full 950N base for tonight's wipefest.

---------- Post added at 06:34 PM ---------- Previous post was at 06:32 PM ----------

Thanks for confirming.

I am somehow still on the 950F bootloader from NEMESIS ROM, so I am trying to figure out how to overwrite it with the N bootloader before getting started on tonight's wipefest

---------- Post added at 06:34 PM ---------- Previous post was at 06:34 PM ----------

it's not letting me reply to you [MENTION=6170708]jooniloh[/MENTION] but thanks for confirming
[Samsung Galaxy Note 8 Questions and Answers] masri1987:
I forgot that I had a backup with the EFS and baseband in twrp. Restored it and now I'm back to the set up when I'm getting good speeds and no carrier aggregation and stable signal
[Samsung Galaxy Note 8 Questions and Answers] masri1987:
lmk how u get that done because the first rom i installed was nemesis too.

good luck!
[Samsung Galaxy Note 8 Questions and Answers] Kalm_Traveler:
Pretty sure I got it to work.

I wiped the phone completely in TWRP, manually (in TWRP) put that sec_omc.zip into /cache/recovery/ then flashed in Odin the AP, BL, CP, and CSC files at once with erase NAND, EFS clear, and update bootloader checked and auto reboot unchecked. Then restarted download mode and flashed the userdata file on AP.

Rebooted and.... seems to be full stock Korean SK Telecom again, and what's more the signal bars are stable (actual signal is still the same, more or less -100 dBa where my Note 5 gets around 83 to 85) but... several Speedtest runs show indeed much better download and upload speeds than I was getting for the past month. I am also not seeing LTE+, so no CA it would appear.

Furthermore, the NEMESIS 950F bootloader does indeed appear to finally be gone, as it's root files are not appearing and I have the 950N versions of everything.

Going to root now and check our favorite shortcut menu.

*EDIT*

I wanted to add that I'm curious why on the LTE Discovery, Note 5 the EARFCN and frequencies list ranges, rather than just a single fixed value. I would have assumed that the Exynos 8 would do the same since they both have Exynos CPUs and Shannon modems.... but I don't know why the 5 does it and 8 does not.
[Samsung Galaxy Note 8 Questions and Answers] masri1987:
i might have to follow your path since i haven't done such a clean wipe like you did, i also never flashed the userdata in the ap (what is it for?)

i have never seen LTE Discovery showing variable ranges either for EAFCN

The better speed test is a good sign, especiallyy since you've had much trouble with it . Lmk, for i shall follow your lead

Edit: as for your signal discrepancy it could be a translation issue... i haven't gotten better than -92 on LTE but i'm usually hovering around -100
[Samsung Galaxy Note 8 Questions and Answers] Kalm_Traveler:
yeah I am pretty sure I'm on completely stock everything now - the only oddity is that Phone Info is only showing Current CSC, the other ones are blank.

check out this from my Note 5 (T-Mobile branded, Exynos)
[Samsung Galaxy Note 8 Questions and Answers] masri1987:
Okay so before i decide to go on my next voyage following kalm's footsteps, i decided to modify tkkg1994's latest multi-csc tool , and flash it.

I got , wifi calling, no CA combos (i have 5 previously on my SKC csc setup), and good speeds like before, no signal drops.

Wifi calling toggle came to life, and wifi calling works, i lost Volte tho (i'll have to look into IMS services to see if i can re-enable it there)

What y'all think?

---------- Post added at 03:53 AM ---------- Previous post was at 03:49 AM ----------

That can't be true,

LTE signals rarely go that high (or is it low? lol) from what i've seen with t-mobile and my time working for vzw, what the hell is your GSM signal then if your LTE is that good? Your Note 5 LTE signal is equal to my GSM signal on my Note 8

yeah you should have a original CSC code...

I'm gonna follow your path btw and report back on what i get.
[Samsung Galaxy Note 8 Questions and Answers] Kalm_Traveler:
I think you've still got the 950F bootloader that is borking things up a bit. I can confirm [MENTION=6170708]jooniloh[/MENTION] that you can manually enable the IMS stuff on full SKC and it registers properly, so I am getting VoLTE and video calling already. Also, no CA bands listed at the moment.

Although it's true (obviously) that you can flash CSC from any chipset device, I am starting to wonder if there isn't anything in those binary encrypted files that has to do with CA and maybe doesn't play nice between the Snapdragon N8 and Exynos N8. Going to play around a bit with some zips, but i might end up rebuilding the zip with the CSC base from my Note 5 since it is more or less the same hardware as our Exynos 8.

---

also, on the N5 (stock, never monkeyd with CSC anything) it has Original CSC, Firmware CSC, and Active CSC but available is blank.

On my N8 now, I have Original SKC, Firmware is blank, Active is SKC, and Available is blank
[Samsung Galaxy Note 8 Questions and Answers] masri1987:
How can I verify if i still have n950f bootlader?

i'm booting up the stock OS after following your instructions (didn't need to flash the omc zip because it actually went through the blue screen process w\o error) . tWRP and root and im signing in right now. will report back shortly.
[Samsung Galaxy Note 8 Questions and Answers] Kalm_Traveler:
If you have the init.rilepdg file in the root, you're still on the F bootloader, that's probably the quickest way to tell.
[Samsung Galaxy Note 8 Questions and Answers] masri1987:
get a kick out of this. i followed ur instructions. booted up to os before twrp and saw that i only had active csc skc , so i rebooted did the twrp thing rooted rebooted then my original csc is showing tmb, active is skc. Signal is about -5 db better, gonna check our fav menus and do a few speed tests

Edit: i have 12 ca combos. visuallly i have full bars where i only had 2 before, speed test sucks, same behavior as with t-mo csc zip , signal drops, i'm getting good upload speeds but download is trash , CA is switching from 1 and 2 .
[Samsung Galaxy Note 8 Questions and Answers] jooniloh:
This can't be right. I was getting LTE+ out of the box on my phone and that was during the whole work day before I could even get home to root it, much less flash anything.
[Samsung Galaxy Note 8 Questions and Answers] masri1987:
nope... i do not have that in root .

I remember seeing LTE+ with stock but only when i first got it.
[Samsung Galaxy Note 8 Questions and Answers] Kalm_Traveler:
Did you edit those 2 files on the EFS partition?

Now that you're making me second guess myself, I ran that SKC zip I made for jooniloh to make sure everything was SKC'd up to wazoo (before doing the wipe, Odin flash, etc)
[Samsung Galaxy Note 8 Questions and Answers] masri1987:
i did not edit those 2 files
[Samsung Galaxy Note 8 Questions and Answers] Kalm_Traveler:
that's why you're still seeing TMB. You can edit manually, or just flash the SKC zip. It does literally nothing besides replacing the OMC folder with the original contents, and setting CSC code in the EFS partition to SKC.

side note, I just flashed a minor tweak T-Mobile CSC zip on top of this fresh SKC install.

Download speeds are worse, uploads basically back to non-existent and I keep getting Network Issues when at that point as well. Hmm...

So this is pretty obviously related to something in the 950U CSC, but the only file I'm not sure about is TMB_keystrings.dat in /system/omc/TMB/etc/ as I have no idea what it is or does. Pretty much everything else is very obvious.

Also, as that earlier screenshot I posted showed, I had "a" T-mobile CSC installed when I was getting 100+ mbps downloads and 30-40 mbps uploads so it's not just having a TMB CSC, it has to be something within the 950U files.

I'm going to try dirty flashing that older CSC Selection tool version again and see what the results are (this won't delete the 'missing' files I grabbed from the 950F, just for clarification).
[Samsung Galaxy Note 8 Questions and Answers] jooniloh:
That's what I've been saying guys. It has nothing to do with the actual ability of the phone to get high speeds with the TMO CSC flashed. I get 100mbps speeds in areas with good b4 if I disable b2 and b12. The problem is how CA is being implemented.

It's REALLY easy to see. Open up internet app (samsung) and go to speedtest beta site (I don't use app cuz it doesn't scale well as you'll see in the next step). Enable multi window and make the browser as small as possible. Open up the dialer and position the multiwindowed browser over the keypad on the right side, but make sure you don't cover 1, 0, *, or #. Type exactly "*#0011" and then press go on the speed test. At this point, quickly press in the last "#" (this is necessary as the service menu will close if you focus another app on top of it). Watch what happens with the speed test and the primary band. It'll probably start off on band 4 (what you were connected to already) and speedtest will be fast. It'll switch to band 2 or 12 and CA will enable. At this point the speedtest drops.

If you disable band 2 and 12, I've noticed NO difference in speed between TMO CSC and SKT CSC (because it stays on band 4).

---------- Post added at 23:37 ---------- Previous post was at 23:36 ----------

exactly so we should be seeing it now if it's truly on stock.
[Samsung Galaxy Note 8 Questions and Answers] masri1987:
Okay, so i redid everything according to travelers instructions > didn't boot into OS though, i went straight from odin flashing to the blue screen to finish "erasing" then back into download mode to do twrp, then backed up my known good working backup without baseband and without efs.

Phone booted up, rooted and all, 4G+ shows up right away, i do a few speed test, at first same behavior (except no signal drops this time), then, i get the speeds in the attachment

Side note : Ookla's services always report differently from others. Not sure what to believe but ill rock this for the next day to test it around town before i plunge back into my non carrier aggregation efs backup.

MY CSCs are SKC and DBT (because of simple rom backup)
[Samsung Galaxy Note 8 Questions and Answers] shouren04:
I forget who, maybe it was you, but someone stated that in good LTE coverage areas CA mostly likey is not running. That is true for me. In the area where I get 80-100mbps, CA does not turn on at all & I stay on band 4 during the entire test.

At home where I get 20-30mbps on average (same with my Tmo Note 5), I just tried what you said. Ran Speed Test on their website, I stay on band 4 the entire time but CA will fluctuate from Added to Activated with band 12 listed for CA.

I have never tried deactivating bands or changed any CA settings.
[Samsung Galaxy Note 8 Questions and Answers] masri1987:
At some point we are gonna have to individually decide if CA is beneficial for our area .

I see potential in my current set up, i'm seeing 4G+ it's def going through the bands, and sometimes speed is up to 50mbps in my kitchen, almost matching my non CA set up which ran up to 69mbps in the kitchen. But then my CA setup that i have right now, ,drops the speeds, and after 10-11 speed runs i finally saw the signal drop. why does this happen? I know one of y'all said you explained it but i missed it.

Does it get better with time and we are simply not being patient?

These signal drops are taxing on the battery.
[Samsung Galaxy Note 8 Questions and Answers] masri1987:
so i backed up the CA enabled efs\baseband in twrp, restored my non CA one, and got these results in the kitchen, where the best thing the 4G+ CA setup could get was low 40's.

[MENTION=4375750]Kalm_Traveler[/MENTION] I'm not sure if this is possible but is there a way to build a t-mo csc zip sans CA combos in the CSC details to at least gain the ability to have wifi calling? (I enabled volte through IMS Settings)
[Samsung Galaxy Note 8 Questions and Answers] Kalm_Traveler:
There may be, I'm not sure where that is located (or if it is part of the CSC itself, rather not something that gets downloaded by having that CSC active).

Also, I'm thinking it might actually be a problem with the 950U files I used. Since i definitely was on a TMB CSC before, and still getting crazy fast speeds I don't think that CA in and of itself is a problem, i think it's the way the 950U CSC is trying to do it on our Exynos phone.

I'm going to redo my zip once i can confirm what needs to be replaced.
[Samsung Galaxy Note 8 Questions and Answers] masri1987:
sounds good, and as usual, i'm a willing guinea pig
[Samsung Galaxy Note 8 Questions and Answers] jooniloh:
This. I can't imagine that stock T-Mobile Note 8s have CA that behaves like this.

I actually just got an idea. There's a t-mobile store literally down the street from me. Has a demo note 8. Gonna do the speedtest + 0011 test I mentioned before on it and my device at the same time to see what I get. I'll let you guys know later this week.
[Samsung Galaxy Note 8 Questions and Answers] masri1987:
I can do that tomorrow too
[Samsung Galaxy Note 8 Questions and Answers] tokoam:
How do I know how many are in use ?
[Samsung Galaxy Note 8 Questions and Answers] Kalm_Traveler:
I didn't mean that the 950U has a problem, rather that using its CSC files on our device is somehow causing the CA to behave strangely. This is why I want to redo the zip with a different devices files. I definitely did not have CA issues on the CSC Selection tool's TMB CSC and those are from an S8 i believe.
[Samsung Galaxy Note 8 Questions and Answers] jooniloh:
That's what I mean. I want to test with the TMO device to see exactly how CA behaves on it when a speedtest is started, because how it behaves on our phones makes no sense.
[Samsung Galaxy Note 8 Questions and Answers] Kalm_Traveler:
gotcha, let us know what you find out. There's a T-Mobile store across the street here but I don't have time to pop over there, and I need to make sure my phone is working properly for on-call stuff tonight.

I'm going to reflash full stock again now, and see if I can't repack the stock bootloader to add in that init.rilepdg.rc to the ramdisk so that epdg can work. My hope/hunch is that as long as that is in place, I can get wifi calling working properly.

Going to do some comparisons of the Note 8 T-Mobile CSC files against the S8 ones in that CSC Selection Tool and see if I can't narrow down the cause of the CA issues, as I would rather use the Note 8 files if possible, since they are newer. Should have a new CSC zip up tonight accordingly.
[Samsung Galaxy Note 8 Questions and Answers] masri1987:
Went to TMobile store.

[youtube]ADqKFpxShS8[/youtube]

There's a distinct -10 dbm difference in signal and my download speeds were half of the s8. Upload was similar to s8

Ca was never activated on the s 8
[Samsung Galaxy Note 8 Questions and Answers] masri1987:
And then I get these speeds on my drive home .
[Samsung Galaxy Note 8 Questions and Answers] jooniloh:
The reason I do it the way I do is so that the service menu is already up and running by the time the speedtest first starts demanding data. Otherwise I would have not figured out the CA behavior whenever speedtest actually starts, even though the phone idles on a faster band.

---------- Post added at 15:03 ---------- Previous post was at 14:59 ----------

your note tried to enable CA?
[Samsung Galaxy Note 8 Questions and Answers] masri1987:
I hear u buddy, i tried not to intrude too much since the store manager was hovering over my head but i can verify the phone didn't have any signal dips, and no speed dips like we do when we have CA., and i ran another test where LTE discovery was in the split window and their s8 didn't switch off band 4. mine went to band 2.

Yes my note tried to enable CA , i went back right now and did a speed test with my non CA setup vs theirs, and theirs still beat me by 20mbps .
[Samsung Galaxy Note 8 Questions and Answers] Kalm_Traveler:
That S8 has EARFCN and frequency ranges just like my Note 5. Interesting, and I still don't know what causes that.
[Samsung Galaxy Note 8 Questions and Answers] jooniloh:
Numbers on my n950n look like that too... What are you seeing?
[Samsung Galaxy Note 8 Questions and Answers] Kalm_Traveler:
mine are just single values, not hyphenated ranges. My Note 5 has those ranges though.
[Samsung Galaxy Note 8 Questions and Answers] masri1987:
fixed single values here too.

[MENTION=6170708]jooniloh[/MENTION] we gotta figure out why there's a discrepancy then in how yours looks vs ours.

[MENTION=5899304]Tkkg1994[/MENTION] pm'd me back today telling me he's working on a csc tool for us, ,wish we could collaborate to help speed up the process.

Also [MENTION=4375750]Kalm_Traveler[/MENTION] before i got home i installed the modified updated csc tool from the s8 pages for t-mo, and my wifi callin worked automatically when i got home into wifi range.
[Samsung Galaxy Note 8 Questions and Answers] Kalm_Traveler:
you're not running a 950F-based ROM?

I used that one first and the wifi calling never worked because the N variants are missing a bunch of back-end libraries and support apps that allow T-Mobile's wifi calling to function.

---

also, we can already use the existing S8 tool, with our device added to the main script.

The reason I've been working on a specific patch is that the CSC Selection tool is huge and it's T-Mobile CSC only enables wifi calling for F variants (just like TEKHD's S8 Tmo patch). The goal is to come up with a small zip that has only what is necessary to get it working on N variants - since the bulk of the ROM is identical between the N and F I believe this should be working properly soon, I've just been too busy to finish it up in the last week or so.

That being said, I'm sure global Note 8 owners wouldn't mind an officially-supported pre-made mega CSC package to choose from.
[Samsung Galaxy Note 8 Questions and Answers] masri1987:
Yes I am running Simple Rom , F Based (switching to ironman rom right now because i'm a flashaholic)

that's what i did i modified the script per instructions on that thread. Wifi calling icon turned green when i made a call, it was a 30 second call just as a test. Not sure if it "actually" worked over wifi calling though.

And i agree with ur overall objective.. Smaller zip more relative to us would be precise since it's a huge file for the multi-csc tool.

About to do a full wipe and install the iron man beta rom, it has a csc built in, might choose a UK csc or something other than skc or dbt to see what happens.
[Samsung Galaxy Note 8 Questions and Answers] Kalm_Traveler:
ah gotcha,

yeah any F-based ROM will work with any of the T-Mobile CSC patches right out of the box. The funny thing in my case is I am back on F bootloader, N stock base with my current CSC patch and for some reason when I'm at work the wifi calling will randomly connect throughout the day, and have the status bar icon.

When I am at home, I can get functioning wifi calling if I reboot but the icon never shows up.
[Samsung Galaxy Note 8 Questions and Answers] Deezy88:
bro i did what you told me to do,thew flash twrp and flash a backup and then flashed a tompack csc,its not perfect but its better than the speed the skt was giving me

30mbps in my home,50 to 126mbps outisde,and in basement ,lte comes in
[Samsung Galaxy Note 8 Questions and Answers] masri1987:
I'm up and running from a fresh flash of ironman kernel beta, with UK CSC.

I have CA combos but none are engaging, speeds are decent in my house.

Show us if you have carrier aggregation working dial *#0011# as soon as u run a speed test , and how is your signal strength on LTE discovery?
[Samsung Galaxy Note 8 Questions and Answers] Kamikaze_Ice:
Is the wifi a 5GHz network?

I've noticed Wifi calling for me on AT&T drops CONSTANTLY with 5GHz yet stays stable with a 2.4GHz network.

And the 5GHz is by far the stronger signal due to all the 2.4GHz networks around the house and our modem (Mediacom won't baseline the modem to disable Wifi that I can't disable or configure due to walled garden setup...)
[Samsung Galaxy Note 8 Questions and Answers] DeeXii:
Why not Note 8(N950N) vs Note 8 (T-Mobile)?
[Samsung Galaxy Note 8 Questions and Answers] masri1987:
Was in a hurry, first Samsung I saw
[Samsung Galaxy Note 8 Questions and Answers] Kalm_Traveler:
So... Ever since I posted that my signal sucks again and Wifi Calling isn't working correctly when I go home... My signal has been fine, speed tests ran fine, and I came home to wifi calling connecting on its own without a reboot and the icon is in the status bar...
[Samsung Galaxy Note 8 Questions and Answers] masri1987:
Lol . These anomalies make no sense.
[Samsung Galaxy Note 8 Questions and Answers] Kalm_Traveler:
yes 5 gHz both at work and home, though technically 2.4ghz is available in both locations as well. I noticed in the framework_res.apk bools.xml there is an option to enable dual-band wifi, might this help?
[Samsung Galaxy Note 8 Questions and Answers] masri1987:
I had this option on my op3t and wifi calling worked fine with it without. My wifi was much more stable though
[Samsung Galaxy Note 8 Questions and Answers] Kalm_Traveler:
Yeah this phone is driving me crazy. Wifi calling has been working perfectly for about 12 hours today and I don't know why. I didn't change anything. Last night i backed up before fully flashing to stock to test the LTE speeds but when i was finished i restored everything (bootloader, recovery, system, data, cache) so why wfc and LTE decided to suddenly work today after a month of being terrible and unreliable is boggling my mind.

On the plus side at least i can put the back glass on now that I know it can still get 100 mbps or higher on the stock CSC.
[Samsung Galaxy Note 8 Questions and Answers] jooniloh:
Sorry I misunderstood what you were talking about. I do have single numbers for that.

I checked the note 8 at T-Mobile. It rests on band 4 and CA activates when there is a demand for data. At that point it aggregates both bands 2 and 12 but the primary band remains 4. CA appears to work "normally" rather than cycling around like on my phone, and it does not witness the immediate drop in speed during a speed test.

I couldn't do much outside of running a speed test in a browser and monitoring *#0011# as retail mode was enabled and I couldn't install any apps to it.

The staff was pretty cool with letting me play around with it though when I explained our situation. If there's any other things I can try out that don't require an app installation, let me know.

---------- Post added at 05:42 AM ---------- Previous post was at 05:42 AM ----------

Also video incoming later.
[Samsung Galaxy Note 8 Questions and Answers] Kamikaze_Ice:
Huh.

Dr. Ketan has a flashable CSC with TMB (see his Note 8 custom rom thread).

I'm AT&T so I don't have any TMB to compare it to, but his AT&T is different from the one included with Kalm_Traveler's pack (v4).

I think it's from an S8+
[Samsung Galaxy Note 8 Questions and Answers] masri1987:
Just saw the zip he uploaded two days ago. Gonna flash it

---------- Post added at 07:43 AM ---------- Previous post was at 07:34 AM ----------

Flashed Dr..ketan CSC. It wasn't aroma and had tmb and att. I flashed it over uk CSC I was testing. Got wifi calling but no toggle. Wifi calling works. I have volte but no toggle. Works fine too. Speeds on my couch 50mbps. -105dbm band 4 no carrier aggregation.