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October 27, 2025 16:26
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Save majaahh/a9dc96d8c14ec6ee7e64d49525721f6f to your computer and use it in GitHub Desktop.
"downgrade" or "upgrade" to ANY One UI version without flashing bootloader on exynos devices:
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| Note: | |
| * If you don't know what you are doing/don't have basic knowledge then do NOT attempt doing this and especially do NOT ask for support if you try | |
| Tools that you will need: | |
| * Windows: A brain, 7-Zip ZSTD (https://github.com/mcmilk/7-Zip-zstd/releases/tag/v25.01-v1.5.7-R1), Mio Kitchen (https://github.com/ColdWindScholar/MIO-KITCHEN-SOURCE/releases). stock firmware that you have installed right now, firmware that you want to get installed | |
| * Linux: A brain, tar, unzip, lz4, some terminal knowledge, Mio Kitchen (https://github.com/ColdWindScholar/MIO-KITCHEN-SOURCE/releases). stock firmware that you have installed right now, firmware that you want to get installed | |
| Guide: | |
| * Install required tools if you haven't already | |
| * Extract super.img.lz4 from your current stock firmware (AP*.tar) with 7-Zip ZSTD (open it with 7zip zstd and drag image out) or tar if you are on linux (tar xvf AP*.tar*) | |
| * Extract super.img from super.img.lz4 with 7-Zip ZSTD (open it with 7zip zstd and drag image out) or lz4 if you are on linux (lz4 -d super.img.lz4) | |
| * Open Mio Kitchen and drag super.img to "Drag and drop the plugin or ROM here" | |
| * Go to project section and click "Rename" then rename it to anything else | |
| * Select super and click "Unpack", then run | |
| * You should be able to see now vendor. Again select "Unpack" and run it | |
| * Repeat current steps for the other firmware | |
| * Open folder where you have those 2 vendors extracted (usually Mio kitchen directory) with explorer or wtv you prefer | |
| * In the vendor from your firmware that you want installed delete "tee" and "firmware" then copy those 2 folders from your current firmware | |
| * In Mio kitchen click on "project" and select project that contains vendor from firmware that you want installed | |
| * Select vendor and select "Pack" then run it. If you are doing this for A33 or A53, in the new window enable "Fs Converter" and select from "f2fs" to "erofs" (Warning: You need @floppy1280 kernel for it to boot) | |
| * Click "pack" and you should have the image in your directory with unpacked firmware that you want installed | |
| * Flash whole firmware with odin that you want installed except "BL" and "CP" tar archives. | |
| * Get custom recovery and boot in to it | |
| * Connect your phone to PC and run "adb reboot fastboot" in Command Prompt/terminal | |
| * After phone boots to "fastbootd", run "fastboot flash vendor path/to/vendor.img" in Command Prompt/terminal | |
| * On A33 and A53 you must flash @floppy1280 because it does not support EroFS images without it | |
| * Reboot to system and enjoy |
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