s8+ csc - Samsung Galaxy S8 Questions and Answers

Hi I've been trying to flash a new rom (from stock) rooted all fine etc but I get no mobile signal at all, I have flashed numerous csc files and still nothing, I am in the UK on ee
Any help please? Specifically trying to install the batman rom
Thanks

Batman ROM is a Nougat ROM, if your stock ROM was Oreo or Pie, of course you will not get any signal on older ROMs, cause your modem will not allow that on older Operating System.
The only way is to flash Nougat modem that's attached in Batman ROM's thread.
Which by default, will not be allowed by your bootloader.
Do you have any SIM PIN security?

No don't have any pin security

Related

Note 4 Issues When Flashing Roms, Please Help

My younger brother has a Note 4. It was previously on Kitkat 4.4.2, stock rom, rooted with dual recovery...
He wanted to manually update to either a 5.1.1 Lollipop rom or even 6.01 Marshmallow.
After having tried several 6.01 roms, the phone either bootloops or the sim card is not reading...
After having trying to flash the radio & bootloader to flash via odin, it keeps failing when trying to do so.
Could someone please recommend a simple Lollipop rom or Marshmallow rom that actually WORKS and the sim card is read as it should?
With my current Sony Z2, it is so much simpler, flashing any roms automatically comes with the kernal, radio, recovery, root, etc...
With Samsung it is much more complex and finding a rom which comes with everything seems difficult to find.
Some roms even ask to choose a kernel & modem/radio. How the F**K do i know which one I need? Even when selecting one it results in a bootloop.
I'm not interested in overclocking or using a custom kernel. I just want something that works and any 5.1.1 rom or Marshmallow rom would do. I want something as close as stock as possible. Not interested in Cyanogen mod, custom roms or such.
Thanks!!
you need to flash a compatible modem for your model number and version of android. If it helps, I'm using: N910FXXUICOL2 with Marshmallow
I have the N910F model.
Hmm, I don't know why you are having problems, actually its Samsung where you can simply flash a ROM with Odin, no need of ADB or anything.
You just make sure that you COMPLETELY WIPE your phone before flashing a stock ROM via Odin. You should not have any problem at all, no one should, unless its hardware.

No WIFI on MM roms G900V Unlocked Bootloader.

Hi, I have recently rooted and bootloader unlocked a G900V and it works fine on Lollipop roms, but when the device is flashed with a MM rom via TWRP or Flashfire the Wifi wont work. IDK what is up with this. Maybe it has something to do with the baseband or whatnot, I'm out of ideas so I have to bug you guys for help, thanks in advance!
A little more Info I'm on PF4 baseband. Tried the Note5 port rom, the BS free rom and a deodexed debloated MM rom and all have no wifi. Ive tried the phoenix kernel, still no go. Tried flashing the PD1 baseband as its another MM baseband and it didnt take (via odin or TWRP ¯\_(ツ)_/¯) . So idk why flashing basebands doesn't work, maybe it'd solve my problem.
By using Getex's [GUIDE] Unlocking the Galaxys S5 Bootloader using DEV Bootloader [KK-MM]
and following the bottom subsection (If You Already Have Bootloader Unlocked And On A Samsung TW Rom) I was able to fix the problem.
Nice! Thanks GETEX!

issues with x727 carrier strength - flash modem or newer stock ROM then custom ROM?

I have an EUI 5.8.21s stock ROM zip, flashable with TWRP, from x727 (modded for dual sim x720, but can be modded back) I also have a modem for 19s. I hear the latter will fix my issues with my phone under custom ROMs, but am a bit nervous about modem flashing. My phone came with stock 18s and no OTA upgrade available.
Will the stock ROM also fix this, and also, will it relock the bootloader? If it relocks the bootloader, can I flash the 19s file that unlocks the bootloader without side-effects for custom ROMs or it not unlocking the bootloader?
I know this is a lot of questions, you don't have to answer all of them, just answer with the right solution for this problem.
I went ahead and flashed the modem... hope this solves my issues.
It didn't solve the issues. What now? Is the stock ROM I found here, mentioned above, bootloader-unlockable or will it trap me in it? I think I want to give it a try, but want to go to custom ROMs; perhaps afterwards if the modem/baseband on it help.
i had a similar (but not same) question like this.
You can try to flash CN stock rom and then reflash US modem. The US modem can be found in many threads.
BTW, i did not notice anybody post a modem file with a 'newer' version no.

[N910G][NOOB] Bootloader and Modem for build N910GDTU1COI1

Hi,
I'm currently having a problem with m N910G Note 4. The baseband version is Unknown. This happened after flashing Norma N7 V12 and different bootloaders and modems for Marshmallow (can't find the G1 BL recommended for the ROM). I had a backup for my Lollipop rooted stock ROM, except data. It has Modem and EFS backed up as well so I restored all.
However, I'm stuck with my phone freezing and rebooting (mainly due to baseband issue). I tried loading different bootloaders and modems available for N910G Lollipop but to no avail.
If anyone knows where I can get the COI1 BL and CP, that'd be great so I can still use my backed up ROM. Else, I might have to stick with upgrading to Marshmallow (since that's the only available free firmware on Sammobile). I'm avoiding upgrading the firmware though due to eMMC issues that mostly occured on Marshmallow.
Thanks,
Vin
Flashed RR 6.0.0 Android 8.1. ROM recognizes the bootloader and modem so no more rebooting. I guess the TouchWiz ROM has to match with the bootloader and modem; else it'd keep on rebooting. I'd have to find the bootloader and modem for Norma N7 though, so I hope someone could still reply here. Thanks a lot XDA peeps!

Is it possible to update firmware with custom rom installed?

Hey guys, i searched a lot, on google and xda, but i think i couldn't find the answer to my question.
I have the latest unofficial LineageOS 8.1.0 Oreo installed, with TWRP.
At home my phone is losing wifi signal every few minutes and then it reconnects again, as far as i know this was already a problem with stock Samsung ROM installed. Now, since i rooted and installed TWRP and LOS i ask myself, if there is a possibility to update latest firmware / modem / booloader without wiping the device, respectively flash the whole Samsung stock ROM with Odin and root / the device again?
To be simple: Is it possible to flash extracted parts of the official Samsung FW package with odin or flashfire to update wifi modem / firmware without losing data and wipe my installed LOS rom?
All i could find was how to do this with official rooted samsung ROM but not how to update with an installed custom rom?
Maybe somebody can help me out here Thanks in advance!
EDIT: I found that somebody made twrp flashable modem and bootloader files! Thatd awesome, you can find the thread here: https://forum.xda-developers.com/galaxy-s7/how-to/guide-onelatest-stock-fw-csc-root-t3702963
BatZzn said:
Hey guys, i searched a lot, on google and xda, but i think i couldn't find the answer to my question.
I have the latest unofficial LineageOS 8.1.0 Oreo installed, with TWRP.
At home my phone is losing wifi signal every few minutes and then it reconnects again, as far as i know this was already a problem with stock Samsung ROM installed. Now, since i rooted and installed TWRP and LOS i ask myself, if there is a possibility to update latest firmware / modem / booloader without wiping the device, respectively flash the whole Samsung stock ROM with Odin and root / the device again?
To be simple: Is it possible to flash extracted parts of the official Samsung FW package with odin or flashfire to update wifi modem / firmware without losing data and wipe my installed LOS rom?
All i could find was how to do this with official rooted samsung ROM but not how to update with an installed custom rom?
Maybe somebody can help me out here Thanks in advance!
Click to expand...
Click to collapse
I think you can update the bootloader and modem without wiping anything. Just flash thru odin. I'm on a custom rom by the way.

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