Skip to content
All firmware

Reader fork

CrossPet

v1.8.3 · MIT

Gamified reading + Vietnamese

X3 ✓ X4 ✓ Risk: Medium

Best for: Readers who want a fun, feature-dense build — and the broadest Vietnamese support.

GitHub repo Flasher / tool

What it adds

  • A Tamagotchi-style virtual chicken that grows as you read (~20 pages feeds it); streaks and stats.
  • Mini-games (chess vs. AI, Sudoku, 2048, Minesweeper), flashcards with spaced repetition, weather, Pomodoro.
  • Full Vietnamese localization with diacritic fonts; custom SD-card fonts.
  • Runs on X3 as well as X4, with KOReader sync and OTA.
CrossPet firmware running on the Xteink
CrossPet’s Vietnamese home screen — recent books, “Gà Ảo” (virtual chicken), apps and file tools.

How to install

via web flasher
  1. 1

    Connect the X3/X4 by USB-C and unlock it.

  2. 2

    Open the flasher at xteink.dve.al and flash the CrossPet firmware (or grab a .bin from releases).

  3. 3

    Optional: drop custom font .bin files into /fonts/ on the SD card.

Locked devices & CrossPet

Unlocked devices only — and a genuine trap on locked units. CrossPet ships no standalone SD update.bin and is not one of the two firmwares the OTA Unlocker supports. Owners who got CrossPet onto a locked X4 report being stranded: USB is dead, CrossPet has no in-app SD update, and OTA cross-flashing fails (issue #28; the SD-flashing fix PR #29 is still open). Do not flash it on a locked device.

Not sure if your unit is locked? Read the locked-device safety brief, or the full locked vs unlocked buying guide.

How to go back

  1. 1Re-flash stock — the same web flasher offers official Xteink firmware.
  2. 2Restore a backup — “Write full flash from file” if you saved one first.
  3. 3Swap boot partition — a quick rollback at xteink.dve.al/debug.

On a locked unit you lose the USB safety net — that’s why locked devices stick to CrossPoint/CrossInk.

Heads-up: Feature-heavy and playful rather than minimal. The BLE remote build is beta and disables some rendering to fit RAM. Never flash on a locked device — owners get stranded with no way back (issue #28).

New to flashing? The mechanics are the same across forks. See the five flashing methods on the directory, or the step-by-step flash CrossPoint without panicking guide.

Other firmware

Full directory →

CrossPoint Reader

The main community firmware

The default — best all-round reader

Full guide

CrossInk

Typography + reading stats fork

Reading stats, Bionic Reading, glyph fixes

Full guide

Papyrix

More formats, one binary for both devices

FB2 / Markdown / HTML, multi-script

Full guide

Microreader

Deliberately minimal, EPUB-only

Minimal, distraction-free EPUB-only

Full guide

AvesO3

For AO3 fanfiction readers

AO3 fanfiction workflow

Full guide

SUMI

Offline apps, dictionary & Lua plugins

Offline apps, dictionary, Lua plugins, emulator

Full guide

CrossPet details verified June 24, 2026 against its GitHub repo, README and releases. PocketInk is independent and not affiliated with Xteink. Firmware names and versions change quickly — check the repo for the latest.