Use at your own risk.
For those who want to install Android Q (10) pre-release download the files in this repository.
https://sourceforge.net/projects/leddaz/files/nintendo-switch-lineageos/lineage-17.1/
Move the files to the SD Card according to this path:
00-android.ini to /bootloader/ini/
boot.img, tegra210-icosa.dtb and twrp.img to /switchroot/install/
coreboot.rom, common.scr and boot.scr to /switchroot/android/
coreboot-oc.rom if you want to overclock to 1862MHz, just rename it to coreboot.rom and put it in /switchroot/android/
lineage-17.1-[date]-UNOFFICIAL-[device name].zip to anywhere on your SD card.
Launch Hekate and navigate to Tools -> Arch bit • RCM • Touch • Partitions -> Partition SD Card.
You can use the Android slider to choose how much storage you want to give to Android, then press Next Step, then Start.
Once that finishes press Flash Android, then Continue.
Press Continue again and it should reboot to TWRP.
If it doesn't reboot to TWRP, hold the power button for 12 seconds, boot into hekate again, then select the Android config while holding VOL-UP and hold VOL-UP until it gets into TWRP.
In TWRP tap mount, then check any/every partition you can, if some/all cannot be selected, just continue.
Now go back and press Install then navigate to external_sd then to wherever you put lineage-17.1-[date]-UNOFFICIAL-[device name].zip and tap on it.
Swipe to confirm and it should install the rest of Android.
Now just reboot, load hekate again, select the Android config, and hope it boots.
All instructions are provided by
@ZachyCatGames
Source
Use at your own risk.