[Q] How bootloader and modem versions affect ROMs? - Galaxy S 4 Q&A, Help & Troubleshooting

Yesterday I've tried to switch ROMs from Cyanogenmod nightly (camera was crashing) to AOSP 4.4.2. AOSP ROM had some problem with CWM 6.0.4.7 (Status 7 error) and when I reverted to Cyanogenmod I had no gsm service. Flashing modem from newest samsung firmware available resulted in working GSM, but I've lost all sound!.
Then I've found out that for older bootloaders I should flash other modem file and I've managed to get sound to work. Now I'm back on Cyanogenmod 11 Nightly and suprisingly, camera works! I suspect that newer modem file I've flashed with Odin fixed camera/cyanogenmod problems.
My first question is:
Should I try to find newest knox-free bootloader and update to it? Is it possible that new ROMs will be working better with newer bootloader?
If so, can you point me to the latest knox-free bootloader?
Second question:
My is taken from firmware for "Open Europe". Since I live in Poland, will I benefit in any way from switching to XEO modem (firmware for Poland)?

Related

[Q] Upgrade Bootloader Only (specifically XT905)

How to upgrade just the bootloader of a phone?
There is no official 3.4 kernel for RAZR M XT905 (Australian), so i tried to flash fxz of XT907 (.15 version)
I flashed all the files except system,modem and partition. Then I installed KKBL TWRP and it did worked. But it was not letting me install the new KKBL ROMS due to different value return in ro.secure.hardware, so I had to remove this line from updater-script.
The new rom installed and booted, but what showing System UI has stopped working constantly, this was solved by updating the modem as well. But the XT907 modem doesnot supports XT905 properly (very low signal strength, no network registration).
I hit the wall there, anyone else knows the proper way to achieve this? Can we mod the modem or firmware? Or can the Lollipop firmware be compiled for old kernel.? Are sbl1,sbl2,sbl3 only necessary bootloader files. What is the function of other files.
P.S Now BlissPop i sshowing Setup Wizard has stopped working. Any way out?
Well i just installed BlissPop nightly for JBBL and it is working
Yes, the bootloader has to be compatible with the modem and that's why you won't be able to use a JB modem with a KK bootloader in most cases.
But the KitKat rollout for the Aussie XT925 (Razr HD) has just started this week (it's 180.46.127) and since both phones' software is very similar, I guess KitKat for XT905 is just around the corner.

[Q] Firmware (Modem)

Hi,
Currently my baseband version is N9005XXUDMJ4. Do I need to update (modem etc.) for Android 5.1? I want to use Temasek's unofficial build. If yes, where can I get an up-to-date version that I can flash with Odin?
BTW: This is an Austrian phone.
Update to a lollipop based baseband is the best way for zero issues in future. Yes you can flash by odin, but if your system and bootloader is kitkat. Why not flash a comlete Firmware? Thats the best way..... there are lots of links @ " general" forum .called how to..... blabla lollipop und so weiter.
Thanks, found a link for updating modem and bootloader, but decided to download the full firmware from sammobile. I'll flash a custom rom immediately thereafter, though.

How to flash a radio

Hello,
I've been trying to find a way to flash the new radios that came with 6.0.
I flashed cyanogenmod when I was still on 5.x so I never updated with the official rom. I went from cm12 to cm13.
I there any way to extract the radio from the canadian OTA and flash it without going completely back to stock?
Thansk!

[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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