I was handed a phone from my friend who installed Firefox OS over Android, but now wants Android back. I know roughly how to flash ROMs, but am not sure how to go into download mode or equivalent in Firefox OS. Any help would be appreciated. The model of the phone is a ZTE Kis. If I can supply any more information just ask!

I am wondering if the operating system on the Kindle Fire would count as an Android-based OS.

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?

Is there some recommended software and procedure to reinstall an OS on an ASUS K017 tablet?

I don't even know where to start. I know that I need an SD card reader and my laptop. What size SD card do I need? How do I put the OS onto the SD card? And then how do I put it into the phone? Can someone help me with the right steps?

I have Micromax Canvas HD 116 with Android 4.2.2 installed on it. What I hate is the unnecessary software offered by them, which is not only occupying space but also RAM and affecting the speed of the device. I just want to get rid of those bloatware somehow. I know if I follow some good rooting procedure, I can achieve it. But is there any way, or an official way so that I can manually re-install the original pure Android OS on my device? I would be very much obliged if someone would provide some good resources about it, and which is applicable to any device.

**Context**: I have a Samsung phone and I am doing a "reset to factory settings" **Question**: could an app that was installed before have altered the factory settings? I am not very acquainted with Android (as opposed to Linux) but my understanding is that, for a given Android installation, specific code is loaded during boot. This code ("Android OS") is initially present on a market phone and then updated with the vendor patches as they are published. They modify this original code. You end up with an "up-to-date Android OS". I guess that the updates are signed so the OS you have is always "vendor-certified". This "patched up-to-date Android OS" is what you get by restoring your phone to factory settings. With the above in mind - **is there a way for a non-vendor application to modify this "up-to-date Android OS"?** Note: I am not addressing here the situation with alternative OS reflashes.

## History ## I don't know how many site visitors read user profiles, so I'm posting this little bit before I get to my actual question, so that the question makes sense. I was born with Cerebral Palsy . If WikiPedia isn't your preferred site for medical conditions, feel free to search your preferred medical advice site. They'll all tell you pretty much the same thing. That said, I'm classified as a **spastic tri-plegic** (tight muscles affecting 3 limbs). In my case, it's both legs and my right arm. Read On.... ## Question ## Since I cannot walk, and am confined to an electric chair, I'd like to find a wearable or health tracker compatible with a Google Pixel 9 XL. I recently switched from a Samsung Galaxy A-315. With that I had a Samsung Galaxy Watch 6 that I never setup. Not only do I feel I've wasted about $400 US, as that watch is just sitting, but I'd love to use that watch or Google's version as a health monitoring tool since I'm nearly 50. I'm stuck at an impasse here. It was my impression that the main monitoring functions were done through the step counter. 1. Since I can't walk, and sit in a chair 10 to 12 hours a day, the watch behaves as follows: - The Heart monitor incorrectly reports me as idle (i.e., I sit too much. While this is true, I'm still active). - The step counter stays at zero, even though I roll nearly a mile a day while working. - I wasn't able to "test" the other apps as I kind of gave up when I realized the devices are tracking something I can't do. The only one that may work properly is the sleep monitor, but again not tested. 2. Do any readers know of any wearables or tracker type devices that are specifically made for disabled people. - Every time I think about Googling Electric chair + Wearables, I cringe at the thought of how many results I might get for something like a Continuous Glucose Monitor and give up for fear of wading through useless results - Is there a way to tell the wearable device that you cannot walk, so that you're monitored differently? I don't think this is specific to only Android based wearables but since I have an Android based phone, I thought I would post here.

Ubuntu Touch (alternative to Sailfish): https://devices.ubuntu-touch.io/ Sailfish: https://docs.sailfishos.org/Reference/Android_Compatibility/#hardware-support Definition/instructions of flash: https://phone.docs.ubuntu.com/en/devices/installing-ubuntu-for-devices ; Must switch to Sailfish or Ubuntu to have the normal cursor? Do not wish to purchase a desktop just to flash (can not afford a room; would not have purpose for a smartphone if could afford a desktop + a room.) Most compute devices allow to install (flash) new operating systems from flash (Universal Serial Bus) storage; how to do this on phones? Does this require an "On-the-Go" Universal Serial Bus device which includes a small Linux (to execute ADB/fastboot)? Do such On-The-Go devices exist, so do not have to purchase a whole laptop just to flash phone? Assistant suggests that such exist: https://poe.com/s/bthVjSoU5cwoE7azr2rg (just purchase such On-the-Go device which has the Sailfish/Ubuntu flash imagee, reboot your phone to the bootloader menu, use menu to load Ubuntu from flash)... can do this?

I was trying to root my [Lenovo Tab M10 (TB-X505X)](https://pcsupport.lenovo.com/in/en/products/TABLETS/M-SERIES-TABLETS/TAB-M10-HD/ZA4K/ZA4K0017IN/) using the Magisk patch image file method. And then I accidentally deleted my TWRP backup and now my Lenovo tab has no recovery or OS. I downloaded the firmware file from the software (official Rescue and Smart Assistant) and extracted the boot, system, recovery image files, and flashed them to my tablet using adb. When in fastboot mode, the image files are being sent to the tablet and are even getting flashed without any error, but the thing is they are not getting correctly flashed into the tablet because the boot loop is just being repeated again and again. Boot loader state --- Unlocked

I'd like to run an older app that is no longer compatible with my current OS. However, I don't want to set my device back to an older OS. Is there any way to make old apps work with a newer OS, or is an older OS my only option?

I'm trying to do a hard reset on a Q Link Scepter 8 tablet, but the dead Android sign comes on with an open stomach with blue little squares. How do I fix this?

I have an old cell phone called LG Sunset™ LTE (L33L) that I want to completely degoogle. It is an old phone that I bought in 2013(?) that I want to install a Custom OS on. I know GrapheneOS will not install on these types or phones nor can LineageOS. I want to degoogle it so that I will not Android 5.0 on my phone. I know that the phone only has 8 GB at maximum. I moved on to another phone that I can use an Android phone. I want to use this one as an MP3 player and video player as opposed to an official phone. Can anyone help me with this? How can I completely degoogle my phone? Or install a Custom OS on it?

I have a TV from the brand "Haam". It's supposed to be smart, but recently I couldn't use any app. Nothing works on it. I can only watch regular channels from satellite. I want to update the TV software, but the only way to update it is by using USB. The following figure shows the system details: This is my first time to update a TV. I don't have the experience on this. Please, I need your help and advice in this regard. Thanks in advance.

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.

I have a Huawei P20 lite, which reports (per System -> About this phone) an OS version EMUI 9.1.0, Android 9, Kernel 4.9.148, Security Patch Level of 1st January 2022. However, Microsoft Intune reports an OS version of Android 9.0 and a Security Patch Level of 2020-08-01. So, which is it? Is the 2022 patch level the patch level of the EMUI part of HUAWEI's Android variant, and the 2020 patch level the latest patch level of the underlying Android version?

When my phone reproduces some specific sounds, it turns off. The sound on the startup also makes the phone turn off. So I want to mute via PC, but I got confused with that ADB stuff. I was trying to change it using ADB on recovery mode, but it is a separate OS and doesn't affect the main one. How can I mute the specific sounds of my phone via PC?

I have an old Samsung Galaxy J1 20W that when it restarts, it goes to the 'Optimizing Android', and whenever it gets to '13 out of 13', it just shuts down and won't turn on again unless I take out the battery and put it back in. Is there any hope for it? Or is it done for good?

Is there any way at all to upgrade my Samsung Galaxy S20 Ultra 5G (Snapdragon) to Android 13? It's stuck on Android 11, and I've been with Google Fi, and now US Mobile, with still no OTA updates ever available. It's: - Model: SM-G988U (SM-G988UZKEXAA) - CSC Country: USA/US - Active CSC Code: XAA - Bootloader/PDA/Baseband Version: G988USQS2DUE2 - CSC Version: G988UOYN2DUE2 It was sold to me brand new 2 years ago as "Unlocked," but Samsung checked the IMEI for me and told me it's "Originally Carrier Locked to Sprint but now T-Mobile." A custom ROM would be awesome, but I'm totally happy just to finally get to upgrade to Android 12 or 13. I've read all over XDA, Reddit, etc, that an unrooted phone can be flashed with a non-custom ROM, but I can't find any definitive answer regarding this thing's unlockable bootloader getting in the way of that. Do I have any hope here, without paying to unlock the bootloader? If so, can someone tell me *exactly* which firmware I should download and flash?

I use a Samsung Galaxy S23 ultra with Android 13 and One 5.1. I see: How can I see which system update Android wants to install?