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Firmware / Chooser

Which XTEINK firmware should you flash?

Four questions, about thirty seconds. We narrow 11 firmware options down to the one that fits your device and your reading — and, just as important, the one that is safe for a locked unit. Every answer is grounded in primary-source facts, not guesses.

Firmware chooser

~30 seconds
Question 1 of 4

Do you need Bluetooth - for example a BT page-turner remote?

Every custom firmware in this guide drops Bluetooth to free up the tiny ESP32-C3 RAM for reading. Only stock keeps it (a few forks add a BT page-turner back).

How the chooser decides

It is a transparent rule engine, not a black box. The logic is ordered so that safety always wins:

  1. 1 Bluetooth first. If you need a BT page-turner, only stock firmware keeps Bluetooth — every custom firmware drops it to free the ESP32-C3's tiny RAM.
  2. 2 Locked = safety gate. If your unit is locked (or you're not sure), we only ever suggest CrossPoint or CrossInk — the two firmwares the OTA Unlocker officially supports. Nothing that could strand a locked device.
  3. 3 Model-aware. X4-only firmware (Microreader, AvesO3, CJK) is never offered to an X3 — and "not sure" is treated conservatively so an X4-only pick can't land on an X3.
  4. 4 Then your priority. Once it's safe, we match what you care about — all-round reading, stats & typography, dictionary & flashcards, FB2/Markdown, CJK, Korean, AO3, offline apps, or minimal.

Recommendations were adversarially tested against eleven owner personas — all routed safely. The underlying facts live in the FAQ and on each firmware's page. Verified June 24, 2026.

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