I recently downloaded [this ROM](http://forum.xda-developers.com/showthread.php?t=2480246) for my Allview P5 (Allview P5 is the equivalent of Gionee GN700W/FLY IQ441/QMobile Noir A8). It`s called Primonex ROM and is made for the Gionee version of the phone. - Firstly, I tried to install it as it is but it got stuck at the boot screen. - After some research I found out that it could be a problem with the boot.img file and I don't know how to extract or edit it... Can someone tell me how to do it?

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 without knowing my mi account credentials.

My HTC One M7 phone is S-OFF, has the latest firmware 7.19.401.2, and has nicely installed "ViperOne+9.0.0-fix", the recovery is TWRP 2.8.6.0. Everything works very well, except that the proximity sensor seems erratic, and when I have a call the ear seems to press different programs on the touchscreen. I would like to return to complete HTC stock ROM so that I assure myself the proximity sensor works well enough (or does not). Do I have to downgrade the firmware to be able to install the stock ROM? I have downloaded the stock ROM PN07IMG_M7_UL_L50_SENSE60_MR_HTC_Europe_7.19.401.2_Radio_4T.35.3218.16_10.33Q.1718.01L_release_421790_signed.zip but seem to be unable to install from TWRP. Or maybe the only way is via fastboot? With the commands: 1) htc_fastboot oem rebootRUU 2) htc_fastboot flash zip RUU.zip 3) htc_fastboot reboot-bootloader Can someone more experienced give some advice, please?

Despite having disallowed every possible automatic update option available, today my phone updated automatically from Android 11 to Android 12 after a short WiFi connection. **How can I get Android 11 back?** I don't care about loosing any data on the phone?

I am trying to flash a rom via mediatek flash tool, my problem is that when I connect the tablet to my PC it connects the mediatek preloader but after 2 seconds it disconnects. What can I do with this ?

I have a generic Chinese tablet (Model: Gener8 7", 2GB RAM, 16GB storage, running Android 10?). I want to install a lightweight custom ROM to improve its performance, but I can't find any ROMs for this specific device. I've searched XDA-Developers and other forums but haven't found anything for this tablet. Does anyone have any idea of some compatible custom ROMs? Here is the link for the tablet.

There are several reasons to be looking for a ROM: - Upgrading or downgrading your stock ROM - Looking for firmware from a different region/language - Flashing a custom ROM for different features, removing bloat, etc. But where can one find ROMs in the first place? What sites are likely to have the ROM I need? *[This question is intended to be canonical](https://android.meta.stackexchange.com/questions/782/where-can-i-find-x-rom-questions-should-be-treated-like-shopping-questions) ; please add to the wiki answer instead of posting separate answers.* See also: https://android.stackexchange.com/q/13510/1465

The android platform nowadays has a secure [keystore](https://developer.android.com/privacy-and-security/keystore) , that is locked to the TEE (trusted execution environment) on phones where it is available. Notably, the TEE part is only used if the hardware supports it. This implies the existence of a software-backed keystore, that doesn't use a TEE. I've been able to confirm the validity of this notion, as on WayDroid on linux, /data/misc/keystore holds an actual keystore. I'm an avid tinkerer, so I always have a bootloader unlocked/rooted phone, and I've hit a few situations where backing up apps and restoring them on a different phone, or even the same phone after wiping all the other data, has caused them to stop functioning, due to them being unable to decrypt the keys. This is an absolute deal breaker to me, as I strongly believe that my ability to own my data superseeds any means of security. This is why, as there seemingly is no way to extract keys from a TEE, I'm looking for a way to *force* android to use a software keystore, such that /data/misc/keystore can be moved around to different phones and used to decrypt any apps. I want to do this through any means necessary, which includes the possibility of developing a magisk module or patching the ROM directly, in order to get this functionality. I just need to know where to look. In the event where it matters, the ROM I'm currently using is crDroid, which integrates KernelSU as its root solution, rather than Magisk.

I want to flash a new ROM for my Android phone. I clean data by fastboot erase userdata but after that, I can not enter TWRP recovery because can not mount /data I tried fastboot format userdata then below errors occured: Couldn't parse erase-block-size '0x'. Couldn't parse logical-block-size '0x'. So how to make the TWRP work again? Or how to rebuild the data partition by fastboot?

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, and on reboot it tried to boot to TWRP but that got stuck on the splash screen too. I tried to reflash with odin, but even in Download Mode the phone is not recognized by odin. I've tried: 1. Countless reboots 2. Unplugging and replugging, trying different cables 3. Trying to get Fastboot to work (Unsuccessful) 4. Letting TWRP load for an hour (Unsuccessful) Extra info: Every reboot redirects to the broken TWRP install, and Download Mode is still accessible from the phone. If someone could help me, that would be nice because I'm scared this phone might be bricked.

In my **HTC One A9**, when I boot in download mode, at the bottom there is the warning: **If you flash a ROM that is not from HTC it could lead to....** (security issues) Does it mean it has a custom ROM?. At the upper side it says ** **locked** ** Also is there a way to know if bootloader has been **re-locked**?

I have done extensive research into the world of ROMs, but could not find the answer to the question: whether a device contains spyware on the firmware level. I want to know whether unlocking the bootloader, and installing a custom de-googled ROM solves the problem of spyware on a Xiaomi phone. I'd like to point the question towards Xiaomi, but in general, it would be nice to hear something on the overarching issue of: does installing a custom ROM on a mobile device solve spyware problems?

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 provider software version, I see the following details:

Service provider software version
SAOMC_SM-A155F_OJM_MID_14_0004
MID/MID,MID/XSG

However, when I check for OTA updates, the URL displayed is: https://doc.samsungmobile.com/SM-A155F/MID/doc.html . To add to the confusion, when I used samfw.com to check the CSC, it indicated that the CSC was TUR instead of MID. I'm a bit lost here. Could anyone please clarify which one is the correct CSC? Any help would be greatly appreciated. Thank you in advance!

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'
FAILED (remote: 'Partition doesn't exist')

but then if i try creating a logical partition

fastboot create-logical-partition product_a 1
Creating 'product_a'
FAILED (remote: 'Partition already exists')

like i said its the same on all other partitions = system,odm,... what am i doing wrong? The phone i am trying to repair: **OnePlus Nord CE 3 Lite 5G CPH2467** (i got the system and all other images from the oxygen updater app)

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, sectors/track 63, heads 255, sectors 20480 (volumes > 32 MB), serial number 0xbc614e, unlabeled, FAT (16 bit). How can I unpack/view the contents of this image file?

I am trying to downgrade my Nexus 6P from Oreo 8.1 to 7.xx. I’ve unlocked the boot loader and can communicate with the device through Google’s adb fast boot command line which works fine (up to a point). I get this far, and it fails every time. Here are the files I am trying to flash. Is there something I am missing? I’ve installed the Google USB drivers too, as I thought that was the issue.

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@pc-virtual-machine:~$ ./android-simg2img/simg2img system.img system.raw.img
pc@pc-virtual-machine:~$ ./android-simg2img/img2simg system.raw.img system.new.img

Result: the file system.img loaded successfully, but the file system.new.img received a FAIL result when using Odin. I noticed something unusual when comparing 2 files: 1. Check file info:

pc@pc-virtual-machine:~$ file system*
   system.img:     Android sparse image, version: 1.0, Total of 1075200 4096-byte output blocks in 5625 input chunks.
   system.new.img: Android sparse image, version: 1.0, Total of 1075200 4096-byte output blocks in 3469 input chunks.
   system.raw.img: Linux rev 1.0 ext4 filesystem data, UUID=57f8f4bc-abf4- 655f-bf67-946fc0f9f25b (extents)

2. Check simg_dump.py:

pc@pc-virtual-machine:~$ ./android-simg2img/simg_dump.py system.img
   simg_dump.py: system.img: The file header size was expected to be 28, but is 32.
   pc@pc-virtual-machine:~$ ./android-simg2img/simg_dump.py system.new.img
   system.new.img: Total of 1075200 4096-byte output blocks in 3469 input chunks.

3. Open with 7z: - File system.img >  - File system.new.img  I used many tools: ext2simg, make_ext4fs to repack, but it didn't work. How to unpack/repack the ROM?

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 for commits or instructions to edit this behavior in the settings APK but I can't find it, this behavior is very common in ROMs on Android 11, in others most are fixed.

I tried to flash a custom rom into my phone but it was an unsuccessful try and I decided to update the TWRP recovery in order to increase my chances to flash a rom. But istead of updating TWRP I bricked my phone somehow I even don't understand. The phone is **Lenovo ZUK Z2**. I tried to flash a stock rom via QFIL previously installing all drivers needed. But when I actually press the download button it says: Validating Application Configuration Load APP Configuration COM:20 SAHARA:True SAHARA:C:\ZUI\prog_emmc_firehose_8996_ddr.elf SEARCHPATH:C:\ZUI RAWPROGRAM: rawprogram0.xml PATCH: patch0.xml ACKRAWDATAEVERYNUMPACKETS:False ACKRAWDATAEVERYNUMPACKETS:100 MAXPAYLOADSIZETOTARGETINBYTES:False MAXPAYLOADSIZETOTARGETINBYTES:49152 DEVICETYPE:eMMC PLATFORM:8x26 VALIDATIONMODE:0 RESETAFTERDOWNLOAD:False MAXDIGESTTABLESIZE:8192 SWITCHTOFIREHOSETIMEOUT:30 RESETTIMEOUT:200 RESETDELAYTIME:2 FLATBUILDPATH:C:\ FLATBUILDFORCEOVERRIDE:True QCNPATH:C:\Temp\00000000.qcn QCNAUTOBACKUPRESTORE:False SPCCODE:000000 ENABLEMULTISIM:False Load ARG Configuration Validating Download Configuration Image Search Path: C:\ZUI RAWPROGRAM file path: C:\ZUI\rawprogram0.xml PATCH file path:C:\ZUI\patch0.xml Programmer Path:C:\ZUI\prog_emmc_firehose_8996_ddr.elf Process Index:0 Start Download Program Path:C:\ZUI\prog_emmc_firehose_8996_ddr.elf Binary build date: May 13 2015 @ 14:41:37 QSAHARASERVER CALLED LIKE THIS: 'C:\Program Files (x86)\Qualcomm\QPST\bin\QSaharaServer.exe -p \\.\COM20 -s 13:C:\ZUI\prog_emmc_firehose_8996_ddr.elf 'Current working dir: C:\Users\vladi\AppData\Roaming\Qualcomm\QFIL Sahara mappings: 2: amss.mbn 6: apps.mbn 8: dsp1.mbn 10: dbl.mbn 11: osbl.mbn 12: dsp2.mbn 16: efs1.mbn 17: efs2.mbn 20: efs3.mbn 21: sbl1.mbn 22: sbl2.mbn 23: rpm.mbn 25: tz.mbn 28: dsp3.mbn 29: acdb.mbn 30: wdt.mbn 31: mba.mbn 13: C:\ZUI\prog_emmc_firehose_8996_ddr.elf 17:01:24: ERROR: function: sahara_rx_data:194 Unable to read packet header. Only read 0 bytes. 17:01:24: ERROR: function: sahara_main:854 Sahara protocol error 17:01:24: ERROR: function: main:265 Uploading Image using Sahara protocol failed Download Fail:Sahara Fail:QSaharaServer Fail:Process fail Finish Download The phone is in fastboot mode all the time. I tried to follow a dozen of howtos but no of them helped. I also used MiFlash, here are the error and the phone state:

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 requirements 1. On boot, I want to automatically launch my app 2. The app should open a live camera feed and collect images at some interval 3. The app should stay alive indefinitely until a user explicitly kills it 4. All this needs to happen with NO user input Nice to haves, but NOT required 5. The app should be able to function without the screen on Now, I've successfully rooted my device to remove as many hurdles as I can. I got my app to launch on BOOT_COMPLETED, etc. But I'm hitting walls with the camera. I know the camera is not allowed to run in a background service. I was considering trying to force my app to be a system app, but I'm not sure if that let's me use the camera in this way either. The other option is to run the app in the foreground, but that requires a user to explicitly allow it to run continuously or else the OS kills it. But this will potentially trigger and run when I'm away, so I won't be there to hit play. This is all like "spying app 101" stuff so that's probably why Android has put up so many roadblocks. But this isn't for other people. I have complete control of my device and will use it on my own property. I can do whatever custom ROMs people suggest, but I've not worked on any Android OS system code before so I'm hoping not to do that. However, if that's the only way, please let me know if you have any suggestions on where to start. What is best way to achieve my high level goals here? Literally any architecture or strategy to do this is fine so long as it meets my requirements above.