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Questions tagged [rom]

Questions concerning the firmware image (i.e. a system image) for an Android device. See full tag wiki for details.

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Need Help with CSC for Galaxy A15 4G

I'm currently using a Galaxy A15 4G and I've run into a bit of a snag trying to figure out the correct CSC (Country Specific Code). When I navigate to the Software Information section under Service ...
poqdavid's user avatar
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23 views

cant delete or create any logical partitions. HELP

I tried fastboot delete-logical-partition product_a (remote: 'Failed to write partition table') and thats because i don't have a product_a partition. Fastboot erase product_a Erasing 'product_a' ...
Tonas Jones's user avatar
0 votes
1 answer
41 views

How can I unpack/view contents of modem.img

I have a modem.img file of type - DOS/MBR boot sector, code offset 0x3c+2, OEM-ID "MSDOS5.0", Bytes/sector 4096, sectors/cluster 4, root entries 512, Media descriptor 0xf8, sectors/FAT 3, ...
Vamsi Shankar's user avatar
0 votes
0 answers
26 views

How to prevent apps for second user showing in list of apps for first user?

How can I make sure that the apps in my secondary space don't appear in the list of apps in my primary profile? I would like it to appear only the installed apps according to active space, I looked ...
zinn's user avatar
  • 1
0 votes
0 answers
76 views

Set up remote camera monitoring on Android OS without user input

Bringing my question over from stack exchange as it was suggested I ask here instead. I'm developing a personal project app (NOT for Play Store) to run on an old pixel phone I have. Here are my ...
CJN's user avatar
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0 answers
69 views

Is the Pixel 7a GWKK3 is a locked or unlocked phone?

I've tried to find if my new Pixel 7a GWKK3 is locked or unlocked by looking at its box. I have not opened it yet. I could not figure out for sure if i can open it and install grapheneos on it. Do you ...
avishay's user avatar
0 votes
0 answers
578 views

Adding prebuilt APK to Android system.img (stock firmware from manufacturer)

Can someone help add a prebuilt APK to an Android system.img for me? I’ve obtained boot.img, system.img, etc. (the full firmware) from the manufacturer of the device. I’ve been trying for hours to add ...
Meunk .3's user avatar
1 vote
1 answer
29 views

Do the same phone models with different version have different modem hardware?

Many phones have different variants for different regions: India, China, N.A., Global, etc. Apart from eSIM support and ISP restriction (like AT&T in the US), the supported radio bands are often ...
hjenryin's user avatar
1 vote
0 answers
137 views

There aren't executable/binaries inside the folder lib/x86 of Magisk-v26.1.apk file

I'm trying to enable KVM for SM-A600G (Samsung Galaxy A6 with exynos7870). I'm following the tutorial by raspiduino: At point 7: Step 7: Download latest Magisk apk and change the .apk extension to ....
Marietto's user avatar
  • 213
0 votes
0 answers
193 views

How do ROM makers get the newer proprietary blobs?

I would like to have a more up-to-date Android on my ancient device, that currently runs 4.1 (Qualcomm MSM8960). Have already applied all the patches to refresh the kernel with the features needed for ...
snuk182's user avatar
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0 answers
707 views

How to solve error in SP Flash Tool?

My operating system: Artix Linux My image fastboot: XIAOMI REDMI NOTE 9 (MERLIN) MIUI V13.0.2.0 ANDROID 12.0 (merlin_global_images_V13.0.2.0.SJOMIXM_20221013.0000.00_12.0_global) Phone: Xiaomi Redmi ...
ChaosCrash13's user avatar
1 vote
0 answers
69 views

Which Android version will be preffered for my device?

I am trying to build a custom rom for my device(Lyf flame 7s 2016). But its hard to choose from which android version should I use? as default it came packed with bloated android 5.1 rom. Most of my ...
Random Guy's user avatar
1 vote
0 answers
787 views

Attempting to extract .img files from a Samsung Rom, how?

So far i have extracted the files out of system.img and cache.img, but the others dont work, they dont seem to be ext4 or something, i tried 2 roms of different phones and tablets, i was able to ...
user avatar
4 votes
0 answers
317 views

Unpack/Repack ROM for SM-G930S (Samsung Galaxy S7)

I want to unpack/repack the Samsung Galaxy S7 (SM-G930S) ROM. I downloaded the ROM from this link. I use simg2img to unpack/repack on Ubuntu. I execute these commands: lz4 system.img.lz4 system.img pc@...
Quang Nguyen's user avatar
1 vote
0 answers
531 views

TWRP stuck on splash screen, odin not recognizing phone

I have a Galaxy S5 (T-Mobile). I recently booted into TWRP (flashed with odin,) and attempted to flash Resurrection Remix with NikGapps using an SD card. Upon reboot RR was stuck on the loading screen,...
IconicIdiot3829's user avatar
1 vote
0 answers
2k views

How to install an custom ROM for android car head unit?

I'm trying to install a custom rom on my Lenovo D1 head unit but since it doesn't have physical buttons i'm struggling to get my device in to recovery mode. The reason I'm trying this is my device is ...
Pol Santha's user avatar
1 vote
0 answers
353 views

Fastboot vs. Adb sideload vs. Custom Recovery?

I have a device that is an A/B device. I want to flash a custom rom I built from scratch. It's been a while for me and Android has changed a lot. Xda says to always use a custom recovery like TWRP. ...
unfold's user avatar
  • 11
1 vote
0 answers
375 views

How do I extract the boot image from my ROM on my phone to modify with magisk? [duplicate]

I am trying to root my phone and I need to extract the boot img from the ROM on my phone preferably using the phone itself. Then I will modify the boot img with magisk. How can I extract the boot ...
User4857's user avatar
0 votes
0 answers
797 views

where is the binary for fastboot mode located and How can I get a copy of it?

Edit Thanks to everyone in the commen section, lk.img seems to be what I was looking for and it is indeed right, because it has strings for varies commands like oem p2u oem reboot-recovery oem off-...
KuhakuPixel's user avatar
1 vote
0 answers
93 views

Is it possible to fake the Android version to allow ROM downgrading?

I was trying to downgrade an Android 11 on Samsung Galaxy A01 Cricket (SM-A015AZ), but cannot because the download mode doesn't let me install an older ROM. So the plan is somehow to modify the info ...
Nanto's user avatar
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1 vote
0 answers
268 views

Does Heimdall have the option to boot without flashing/substituting the kernel? (like fastboot boot boot.img)

Fastboot has the option fastboot boot Image.gz to boot a kernel without flashing it to the phone. Is there something similar for Heimdall? I did not want to mess with my phone's kernel for now. It's a ...
Rafaelo's user avatar
  • 71
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0 answers
353 views

How to connect over fastboot to Galaxy A50?

I'm on ubuntu 22.04 and I can connect over adb to my Samsung Galaxy A50, and do adb reboot bootloader it reboots to bootloader mode, but I can't use fastboot devices, it returns empty. Other phones ...
Rafaelo's user avatar
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1 vote
0 answers
24 views

I have an old android tablet, how do I update it? [duplicate]

Ice cream OS on an Irulu x10 tablet, is there anyway to update to a new version of OS without cracking open the tablet to look at the CPU/board model numbers for an updated firmware flash?
Archerbob's user avatar
  • 162
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0 answers
174 views

How to recompile existing Android ROM without certain packages

I want to be able to take any version of Android ROM from any device, decompile it, remove certain packages (browser, Google Play, etc), and then recompile it, just without those packages. So it would ...
Kovy Jacob's user avatar
1 vote
0 answers
511 views

How to know which device tree my phone uses?

The boot.img contains lots of device tree files. 15 for my Poco M3. They are all variations of the same name but with some different properties. Anyways, how do I know which one of them my phone picks?...
Rafaelo's user avatar
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1 vote
0 answers
882 views

How can I convert an android rom from 32bit to 64bit?

My phone (Samsung Galaxy A10s) is a little unknown phone and it has few custom roms for it, I want one that is 64bits, arm64 and android 10 or 9, I didn't find any, so I wanted to make one myself, I ...
EL3TRIC's user avatar
  • 11
1 vote
1 answer
458 views

Why is a vendor blob needed to build an Android ROM?

Why do we need a vendor blob in order to make our custom Android ROM from the AOSP project? As far as I know, the vendor blob contains the required proprietary drivers. But these drivers we could have ...
Priyanshu Jangid's user avatar
1 vote
0 answers
2k views

How to enable both "diag" and "rndis" port of Android?

I have One Plus Nord device which is rooted using Magisk. I am able to enable the usb tethering(rndis) and capturing modem logs(diag) separately using the libusb program. But the requirement is to ...
Vatish Sharma's user avatar
1 vote
1 answer
1k views

GPT weird partitions, ROM dump problem, MTK phone

I used WWR MTK Tool and SP Flash Tool v5 to dump and analyze preloader and GPT from a new Oukitel K15 Pro phone with Android 11. Oukitel haven't posted the ROM for this model for some reason. Managed ...
Jeff7's user avatar
  • 63
3 votes
0 answers
3k views

Cloud Mobile Stratus C5 Elite stuck in boot loop due to missing/incompatible ROM

I got a phone Cloud Mobile Stratus C5 Elite stuck in boot loop after 2 days. I'm sure it's the ROM that is missing or incompatible and I have no clue which one is supported. It's running Android 11 Go ...
Tater Champ's user avatar
1 vote
0 answers
2k views

How to repack a system.new.dat.br with open source command line tools?

We can decompress a system.new.dat.br and then convert to an img, like this: brotli --decompress system.new.dat.br -o unpacked_system.new.dat sdat2img.py system.transfer.list unpacked_system.new.dat ...
Guerlando OCs's user avatar
1 vote
0 answers
153 views

flash boot.img to use the kernel

why to flash a kernel i need a zipper anykernel 3? i can't flash directly the boot.img of a rom, example (PixelExperience) to have oniichan kernel on (LineageOS)? i'm absolutely new in the world of ...
CadettoEx's user avatar
1 vote
0 answers
239 views

I'm unable to repack system.img after extraction

I extracted system.img of my rom using MTK extractor and edited a app then tried to repack but it failed. MTK extractor says system_unpack/file_contexts:No such directory found. Can anyone please tell ...
Bharath9900's user avatar
0 votes
0 answers
93 views

rom on Xperia E4g instead of E1

Im trying to install lineage os in Xperia E4g E2003 but I can't find It. I want to flash and E1 rom but im not sure if It Is going to work.
Minegun's user avatar
1 vote
0 answers
477 views

Android app installed (with wrong package name) as system app but not visible in system partition

System app Google Calculator update fails, but that's not the funny thing. History I was on crDroid 7.8 (Android 11) with Google Calculator app installed in system through FlameGApps. Then I got the ...
AvirukBasak's user avatar
2 votes
0 answers
77 views

Is it possible to buy a used Samsung phone with fake/hacked Android ROM that looks like the official one and may spy on you?

I have a used Samsung phone. I wonder if it is possible to have a malicious ROM uploaded that looks like the official one that may allow the hacker to spy on the user. Can I make sure that I have the ...
martin1000's user avatar
1 vote
0 answers
404 views

Doogee S88 pro Malware + install custom rom

I purchased the Doogee s88 Pro a year ago, and it is the perfect phone for my rugged lifestyle, except of the uncertainty of them installing malware / adware in their devices. I'm trying to install a ...
mbs's user avatar
  • 11
2 votes
1 answer
329 views

`UPDATE.APP` file in Huawei firmwares

I found an UPDATE.APP file inside of TRT-LX2 firmware ZIP (ROM), but I want to know what does the file do? What does it contain?
Ar Rakin's user avatar
  • 155
1 vote
0 answers
75 views

Want to install a custom rom (first time)

I want to install custom ROM on My Redmi 7A (pine) And I don't want to flash a recovery instead I want to use the ADB and Fastboot I unlocked my Bootloader. It is Possible? (I am a newbie to this kind ...
retardedmf-9t86's user avatar
1 vote
0 answers
50 views

twrp recovery installed but it boots to android instead

i wanted to add custom rom to my galaxy j7 max and hence tried installing twrp(3.1.1& 3.2 or what ever) in Odin the task passed but then when i try to boot to it by pressing vol up+ power + home , ...
bipin giri's user avatar
2 votes
1 answer
996 views

Why does GrapheneOS use signify instead of PGP to sign their releases (GPG, cryptographic signatures)?

Why is it that the GrapheneOS (Android ROM) project crypographically signs their releases with signify instead of PGP? The install documentation for GrapheneOS instructs the user to install the ...
Michael Altfield's user avatar
3 votes
0 answers
1k views

How to make Private DNS unchangeable?

Are there any way to make android private dns settings unchangeable? I need app locker for android that password-protect private dns activity or class
abolfazl tilami's user avatar
0 votes
1 answer
241 views

Why should I care about ROM size when buying a new 'phone?

RAM is clear enough, but why so many different ROM sizes & how much does a basic user need? Basic == 'phone calls/WhatsApp/SMS/email/light browser use - no games, streaming, videos, music,
Mawg's user avatar
  • 644
1 vote
0 answers
149 views

Redmi 8 bootloop

My Redmi 8 phone is in bootloop. It got stuck with its Remi logo and does not start. I am trying to unlock the bootloader but I didn't find a way other than mi unlock which I don't know how to use it ...
Hritik Kumar's user avatar
2 votes
0 answers
37 views

Is there a Boot ROM within other SoCs? [duplicate]

I was researching on methods to try and recover my data and I learned something interesting, a user 'kuruczgyurci' posted: This does not exactly answer the original question, but since I managed to ...
Brickstin's user avatar
1 vote
1 answer
365 views

Is there a way to root a Samsung Galaxy S4 running LineageOS 17.1?

Following the "Samsung (System-as-root)"* instructions, I cannot get Magisk to patch lineage-17.1-20210304-nightly-jfltexx-signed.zip for a Samsung Galaxy S4 (SGH-M919). Magisk throws an &...
Geremia's user avatar
  • 335
3 votes
0 answers
27 views

How do I get full feature list of Wear OS?

I'm developing a custom version of Android system for a 'Android smart glass' device. I'm trying to customize a new version of Android ROM that suits this type of wearable device. Needs features such ...
SolessChong's user avatar
5 votes
1 answer
5k views

Verifying a (custom) ROM signature

Android ROMs and also Android custom ROMs are typically cryptographically signed. Most users will only recognize this if they try to install a ROM and the signature verification on-device fails. For ...
Robert's user avatar
  • 20.4k
1 vote
0 answers
362 views

How are AOSP compiled .img stores in phone flash?

There are the contents of a Xiaomi image for some phone that I downloaded. It is a fastboot image. I think that it means that it can be flashed by fastboot. ├── AP │   ├── APDB_MT6768_S01__W2006 │   └─...
Gatonito's user avatar
  • 151
3 votes
0 answers
1k views

What is the format for an Android ROM?

I downloaded a ROM for a Xiaomi phone to see what's inside. It's a zip file, that has these inside: boot.img META-INF system.new.dat.br vendor.patch.dat ...
Gatonito's user avatar
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