Update README with firmware flashing warnings and crosspet status

Removed warning about flashing Papyrix on USB-locked devices and updated crosspet status to unmaintained.

README.md

@@ -67,10 +67,6 @@ USB port or browser before assuming the device is locked. Only reach for the unl
 > Flashing any other firmware on a USB-locked device may **permanently brick the device** or leave it **permanently
 > stuck on that firmware with no recovery path**. Once USB flashing is re-locked, your only way back is via OTA, and if
 > the firmware you flashed doesn't support OTA, **there is no way out**.
-> 
-> **The Papyrix fork has removed OTA update support from its code.** If you flash Papyrix onto a
-> USB-locked unit, you will have **zero update or recovery path** and will be stuck on it forever. **Do not flash
-> Papyrix (or any other unsupported firmware) on a locked device.**
 
 ## Install firmware
 
@@ -249,7 +245,7 @@ One of the best things about open source is that anyone can take the code in a d
 
 - [papyrix-reader](https://github.com/bigbag/papyrix-reader) — Adds FB2 and MD format support. Actively maintained with Arabic script support. Custom themes via SD card.
 
-- [crosspet](https://github.com/trilwu/crosspet) — A Vietnamese fork that adds a Tamagotchi-style virtual chicken that grows based on your reading milestones (pages read, streaks, care). Also: Flashcards, Weather, Pomodoro timer, and mini-games.
+- ~~[crosspet](https://github.com/trilwu/crosspet) — A Vietnamese fork that adds a Tamagotchi-style virtual chicken that grows based on your reading milestones (pages read, streaks, care). Also: Flashcards, Weather, Pomodoro timer, and mini-games.~~ (Unmaintained)
 
 - [crosspoint-reader-cjk](https://github.com/aBER0724/crosspoint-reader-cjk) — Purpose-built for Chinese, Japanese, and Korean reading.