There is no custom rom for this and there won’t be. It uses a MediaTek SOC. The bootloaders cannot be unlocked.

Check out Simplewall. Simple enough and not complicated.

https://simplewall.en.lo4d.com/windows

Many of them are on Telegram. Try looking for the groups by device name.

Thank you for the recommendation. One of the best foss weather apps I’ve seen and with widgets too.

Nothing Technology Limited (stylised as NOTHING) is a British consumer electronics manufacturer based in London. It was founded by Carl Pei, the co-founder of the Chinese smartphone maker OnePlus. Investors in the company include iPod inventor Tony Fadell, Twitch co-founder Kevin Lin, Reddit CEO Steve Huffman, and YouTuber Casey Neistat.

https://en.m.wikipedia.org/wiki/Nothing_(company)

Check out the Xiaomi mi fit or Amazfit watches.

I just got myself the Alldocube iplay 50 mini pro. Great little tablet.

I was skeptical initially. Reviews across the board praised it. Bit the bullet and got it … Not perfect but pretty darn good.

The 12 Pro is Mediatek SOC. They don’t open source their chipsets. https://xdaforums.com/t/research-supported-mtk-custom-roms.4265209/

That being said… Check out GSI roms and DSU. I’ve not tried it out tho.

The 13 Pro is a Qualcomm SOC.

I’m using the Redmi Note 10 Pro and it has great rom support.

The upcoming Note 13 Pro looks promising.

There are good reviews on the Xiaomi Mi Pad 6.

Check out Techtablets reviews on YouTube. He does some good reviews on some China brands. Teclast and Dogee seem reputable. Other than the usual Xiaomi, etc.

Seconded. Joplin is full featured, has sync and FOSS.