Heimdall VS samsung-kernel

Transfer the patched img file to your Windows PC (to use Odin, in Linux you need Heimdall) and rename it to boot.img. Add the file to tar using 7-zip or tar command then load tar file to AP in Odin. Flash your phone and when it says PASS!, you are doing well!

Fo example, Heimdall is a dashboard, a polygon validator node, and an Android firmware flasher. All of which are quite popular projects

Seems flashing fails very early, indicating that there could be some libusb issue rather that heimdall issue. You could try building heimdall after merging this PR: https://github.com/Benjamin-Dobell/Heimdall/pull/478 but error isn't the same so unclear if it is the same issue.

Benjamin's sources are at github: https://github.com/benjamin-dobell/heimdall and alternative sources used by for example alpinelinux can be found at my sourcehut: https://git.sr.ht/~grimler/heimdall

Any ideas? The full log is here

And I also found this heimdall which flashes to Samsung phone ROMs which will be needed.

ah, this is where android studio and the other tools come in. I can install adb and fastboot, and they operate as regular commands. Android studio is also a linux-native app. I use android all the time with linux, and I enjoy it more than windows. MTP support is great in linux, adb and fastboot feel like normal commands, not just regular binaries like in windows. Also, a project called "heimdall" aims to support Odin (which is leaked samsung internal software) https://github.com/Benjamin-Dobell/Heimdall

I don't know. Last time I re-imaged a Samsung phone, I used Heimdall[1]. It is open source and runs on linux.

[1] https://github.com/Benjamin-Dobell/Heimdall

Yeah, Heimdall is a thing for Samsungs. Most Android devices I owned were made by Samsung, hence why I tend to forget that Android can run on other things too. https://github.com/Benjamin-Dobell/Heimdall

If you are just after a kernel, what is wrong with Samsung's kernel? They are good at providing the kernel sources for all their devices at https://opensource.samsung.com/ - just enter your device model number.

samsung should have supplied source code for your kernel, so start by downloading it at https://opensource.samsung.com

Maybe it's different in the US, but in Europe, all Samsung phones can have their bootloader unlocked via a simple two-step procedure, so end users can flash whatever they like as the OS. They also have all their Linux kernel source code, along with any changes they've made to other open source components, available at https://opensource.samsung.com.

I've repurposed an old Galaxy S7 to run as a remote development server, via this method. I have it set up so it's just like logging into any other Linux box.

A more official way would be to use https://opensource.samsung.com , input the model, click on Announcements, if files or folders related to 64 bit are missing (e.g. lib64), then the OS is 32 bit.

I recently have looked into flashing my Samsung with a custom linux, look at opensource.samsung.com where u can actually download the phones system/kernal but most importantly it has the firmware needed.

To obtain the source code covered under licenses which have the obligation of publishing source code, please visit http://opensource.samsung.com/ and search by library name. A complete corresponding source code may be obtained for a period of three years after our last shipment of this product by visiting our website. If you want to obtain a complete corresponding source code in the physical medium such as CD-ROM, the cost of physically performing source distribution may be charged. This offer is valid to anyone in receipt of this information.

If somebody already ported something like LineageOS to your device you could look for the firmware in where the port was posted on, say, XDA Developers. That's how I found vendor files (or basically what is essentially firmware) for my A21s. That being said, even if you find the vendor files porting something like PostmarketOS to a new platform requires skill and some very specific knowledge about Android phones. I tried to compile Lineage myself using the vendor files and the Samsung kernel (which you can find on opensource.samsung.com for your model), but failed miserably to the point where I had to reflash my bootloader just to make things work again. If you do take up on that task, I wish you luck in your endeavors.

Most manufactures do limit the state of charge, with my Pixel 3XL at 95% and LG V40 around 94% (don't quote me on that, I don't remember the exact value). For Samsung, you can check out some of the low level definition files for the S10 and S20. Better to look at the S10 file since it's not in decimal and has comments. Mostly identical for the S21.

https://github.com/djb77/samsung-kernel/blob/G97XX-TW9/arch/arm64/boot/dts/exynos/battery_data_beyond2lte_common.dtsi#L151