Armbian 26.2.1 Noble XFCE (BSP Kernel: 6.1.115) + PanVk - mesa 26.0 (https://launchpad.net/~ernstp/+archive/ubuntu/mesaaco) + Box64 arm64 v0.4.1 4474ac0f1 (https://ryanfortner.github.io/box64-debs/) + ge-proton10-32 (https://github.com/GloriousEggroll/proton-ge-custom/releases/tag/GE-Proton10-32) + DXVK-stripped v1.7.3 ~40fps@720p (mixed settings) Metal Gear Solid V - The Phantom Pain - v.1.01 (denuvoless version) (Tpp_steam_mst_en_0803_2200)

Other question ? When looking to previous boot log, it is strange to view u-boot date ? U-Boot SPL board init U-Boot SPL 2017.09-orangepi (Nov 15 2023 - 16:53:25) Trying to boot from MMC1

After reinstalling one fresh SDCARD based on Armbian_25.11.1_Orangepi5-plus_trixie_current_6.12.58_minimal.img then behavior is the same, noting after following message.... Trying to boot from MMC1 Trying fit image at 0x4000 sector ## Verified-boot: 0 ## Checking atf-1 0x00040000 ... sha256(7612223b82...) + OK ## Checking u-boot 0x00a00000 ... sha256(e17d8b540a...) + OK ## Checking fdt-1 0x00ad1370 ... sha256(5411c775cf...) + OK ## Checking atf-2 0x000f0000 ... sha256(b2af21b504...) + OK ## Checking atf-3 0xff100000 ... sha256(70505bb764...) + OK Jumping to U-Boot(0x00a00000) via ARM Trusted Firmware(0x00040000) Total: 715.486 ms

Sorry for the bad identification of my SBC. My model is one Orangepi5 plus, therefore it seems that Armbian_25.11.1_Orangepi5-plus_trixie_current_6.12.58_minimal.img.xz is the good choice ?

According to the datasheet (https://de.scribd.com/document/948890791/MT7988A-Datasheet) the supported baudrate seems to be between 300baud and 3Mbaud. However cannot tell anything about support status. Neither do I have this hw, nor did I ever dig into this soc. Starting with device tree overlays might be a good start or check the whole device tree in general for the uart nodes if present.