Xteink X4: Fit, First-Day Setup, and CrossPoint

The Xteink X4 is a $69 pocket e-reader for people who want to read instead of scroll, and who will do more setup than a Kindle asks. Xteink no longer sells it new. This page is the map if you own one, are weighing a secondhand unit, or are sizing it against the X4 Pro: fit, stock firmware, first-day setup, CrossPoint, books, accessories, locked-unit risk, and whether it’s worth keeping.

At $69 it became the first non-Kindle e-reader to crack Amazon’s top-10 (June 2026), reportedly outselling the Kindle Colorsoft. Hardware is a 4.3-inch E Ink screen, physical buttons, USB-C, a microSD slot, a magnetic back, and an ESP32-C3 chip. The official product page lists it as a 77g magnetic pocket reader with unlocked firmware and developer-friendly hardware.

What Problem Does the Xteink X4 Actually Solve?

The Xteink X4 solves phone-reading failure. It gets you reading instead of scrolling. Most people who reach for an X4 are not shopping for specs. They are tired of opening a phone to “read” and resurfacing 40 minutes later having read nothing.

Is the X4 a Good Fit? (The Short Version)

The X4 is a fit if you want a tiny EPUB reader and will live with extra setup. Skip it for a front light, touchscreen, audiobooks, or a Kindle-style store. The original is discontinued new, so this is a fit check if you already own one, are considering a secondhand unit, or are sizing it against the X4 Pro. Read the X4 pre-purchase review for the longer warning list, or pick a live model by carry style in the X3 vs X4 guide.

What Is the Stock Xteink X4 Like to Use?

Out of the box, the X4 is a small button-driven reader. You read supported files, use the physical buttons, and carry it easily. The complaints cluster around what stock firmware does not try to solve:

• file transfer is confusing if you came from an app-store e-reader
• EPUB rendering and fonts may need tweaking
• a 4.3-inch screen is a poor fit for tables, complex formatting, or PDFs
• no front light, so you need ambient light or a clip-on
• no touchscreen, so navigation is buttons only

If you expected a smaller Kindle Paperwhite, the first hour can feel rough. The indexing, SD-error, and ghosting fixes live in the stock firmware issues guide.

What Should You Do First When Your Xteink X4 Arrives?

Charge the X4, write down the firmware and seller, put a few test books in /books on a known-good FAT32 or exFAT card, then decide whether stock is enough before you flash.

Steps:

1. Charge it fully. Small E Ink devices can behave oddly on a low arrival charge. The X4 does not ship with a charging cable, so have a USB-C cable ready.
2. Note the firmware version and seller. Open Settings → About (sometimes labelled “System” or “Device info”) and write down the firmware string, build, and where you bought it.
3. Prepare a microSD card. Format a known-good card as FAT32 or exFAT, then create a top-level /books folder. A flaky card is the most common cause of “book won’t open” and progress-not-saving problems.
4. Add a few test books. Load one simple EPUB, one complex EPUB, and one TXT file before moving your whole library. EPUB and TXT are the safe formats on stock firmware.
5. Decide whether stock is enough. If you want better fonts, themes, reading stats, sync, or broader format support, CrossPoint is the next step. If you only read simple EPUBs in short sessions, stock may be enough.

For the full first-week path (inspect, protect, then read), use the first-week setup checklist.

Why Does Everyone Recommend CrossPoint Reader for the Xteink X4?

CrossPoint is the main community firmware for Xteink devices, and the usual reason people pick an X4 over a more polished e-reader. Current stable is 1.5.0 (August 2026). It is open-source, MIT-licensed, and actively maintained. You get more fonts and themes, reading stats, better controls, and button remapping.

These transfer features come from CrossPoint, not stock: a built-in Wi-Fi web upload server, a Calibre wireless flow, WebDAV, and the free CrossPoint Sync app for iOS and Android. On stock firmware, the SD card is your only real option.

CrossPoint is not the only fork. A few worth knowing if you own an X4:

Compare the builds in the firmware comparison guide. Confirm whether your X4 is USB-locked, then use CrossPoint’s supported path: USB WebSerial in Chrome or Edge, or the SD-card method for locked units. Don’t flash random .bin files from forum comments. Walk through the install, unlocker, and SD recovery in the CrossPoint install guide.

Known CrossPoint quirks worth knowing before you flash

• Battery percentage reads erratically. A known minor issue; hide the battery percentage in reader settings.
• White X4 units wash out in direct sun. CrossPoint’s Sunlight Fading Fix toggle under Display settings handles this.
• Chinese and other non-Latin scripts work. CrossPoint and CrossInk load .cpfont families from the SD card. Build one with the Font Builder on the CrossPoint site (cjk/hangul presets), or use Settings → Reader → Font Options → Manage Fonts, then copy each family folder to /.fonts/ on the card.

Progress not saving, EPUB crashes, and horizontal lines after flashing are in the CrossPoint install guide.

How Do You Get Books Onto the Xteink X4?

On stock firmware, the microSD card is the only reliable path: pull the card, copy EPUB/TXT files into a /books folder, reinsert. After you flash CrossPoint, you also get Wi-Fi web upload, Calibre wireless, WebDAV, and CrossPoint Sync. The X4 has no NFC, so the X3’s tap-to-transfer trick does not apply. Xteink’s XT-Cloud plus the official Companion App does wireless transfer on stock firmware too (app-only, no public API). Skip it on day one.

Start with the SD card, confirm a simple EPUB opens, then add a second workflow if you want one. If the X4 does not recognize a book, check file format, folder location, card health, or a malformed EPUB. Walk through all four methods in the book-transfer walkthrough.

A note on DRM and moving a Kindle library over

The X4 (stock or CrossPoint) cannot open DRM-protected books. Purchased Kindle and Kobo titles are encrypted, and no store app on the X4 can authorize them. SD card, Wi-Fi, and Calibre do not change that. Same wall for anyone coming from an old Kindle Amazon cut off from the store.

Build from DRM-free EPUBs: public-domain titles, DRM-free storefronts, your own documents, and web articles. Removing DRM from books you legally bought is a legal grey area that varies by country. Test 3 to 5 books. Plan for a fresh-start library, not a Kindle mirror.

What Does the Xteink X4 Read Well (and Badly)?

Match the file to the 4.3-inch screen:

The X4 has no backlight or front light. E Ink panels reflect ambient light the way paper does. Daylight or a lamp is fine; night reading needs ambient light or a clip-on or magnetic reading light. No firmware can add a light the hardware does not have.

Library apps: what about Libby and OverDrive?

There is no Libby or OverDrive app and no plan for one, because the X4 is not an Android device and has no app store. You cannot borrow library books directly the way you can on a Kindle or Boox tablet. Read Can you use Libby on Xteink?.

Which Xteink X4 Accessories Actually Matter?

Cases, a screen protector, and a light change how useful a 77g pocket reader feels. See the full set on the accessories page.

• A bumper, sleeve, or pouch is inexpensive protection against bends and drops.
• The X4 includes a matte screen protector; install it before daily carry.
• It ships with two stick-on magnetic rings; phone-back carry depends on phone size and case thickness.
• You need a clip-on light for dim rooms. There is no built-in light.

Inspect the screen before you do anything else

Is Your X4 Locked? The Biggest Buying Risk

Some X4 units ship USB-locked: the in-browser and desktop flashers can’t write to them over USB. A locked X4 still reads books on stock firmware. What it blocks is the easy browser flasher.

On a locked X3 or X4, SD-card flashing is the primary route: drop the correct-model update.bin on the card root and the OEM bootloader flashes CrossPoint locally. The OTA Unlocker (same site) is the fallback when SD flashing will not take. USB flashing stays disabled either way. The most common false “locked” report is an X3 charge-only pogo cable. The X4 uses USB-C, so try a known-data cable first.

Run the full check in the locked-vs-unlocked buying guide before you order or flash.

Is the Xteink X4 Worth It?

The X4 fits people who like small devices, offline reading, physical buttons, tinkering, and a focused tool instead of a phone.

The X4 Pro shipped July 21, 2026 at $99. It is a front-lit, touchscreen refresh running Xteink’s XTOS, and you can buy it (stock permitting). An X4 Gen 2 has leaked with no confirmed specs, price, or ship date. If you already own an X4, it is a pocketable, hackable $69 reader worth the setup, and there is little reason to wait on Gen 2. If you want a front light or touch, look at the X4 Pro and the X4 vs S4 vs X4 Pro roundup. If you’re shopping new, the X4 Pro or X3 are the current equivalents. Skip the platform for a front light, touchscreen, Libby, or a bookstore; a Kindle Paperwhite will serve you better.

The Bottom Line

• The Xteink X4 is a $69 pocket reader that wins on behavior, not specs.
• Stock firmware is basic; most owners flash CrossPoint for Wi-Fi transfer, fonts, and stats.
• Tradeoffs: no front light, no Libby, no DRM-protected books, and a locked-unit risk that is usually a cable or recovery-path issue.

Quick Answers Before You Buy

Does the Xteink X4 have a backlight?

No. Night reading needs a clip-on or magnetic light. Firmware cannot add one.

Can I read library (Libby / OverDrive) books on it?

No. No Libby or OverDrive app, and no DRM support. You load files yourself.

Will my Kindle books transfer over?

Only DRM-free EPUB and TXT. Purchased Kindle and Kobo titles will not open. Test 3 to 5 books before moving a whole shelf.

Does the X4 support audiobooks or MP3?

No. The X4 reads EPUB, TXT, BMP, and JPG; there is no audiobook or MP3 playback. It is a text reader, not a media player.

My flasher can't see the device: is it locked?

Usually not. Try a known-data USB-C cable, a different port, and Chrome or Edge. Locked units still have an SD-card install path.

Can I revert to the original OS after flashing?

On an unlocked X4, yes, if you save a backup first. Before you flash, use Full flash controls → Save full flash in the web flasher (~25 minutes) to grab a complete image; restore it later with Write full flash from file. No stock image is published for download, so that backup is your only ticket back. Locked units have no full-flash restore path.

What is the maximum SD card size the X4 supports?

Officially, 256 GB: the X4 ships with a 16 GB microSD card and the vendor lists expansion up to 256 GB. In practice that spec is conservative, since CrossPoint owners report 512 GB exFAT cards working fine, with failures usually tracing back to formatting or partition scheme rather than card size. If a large card misbehaves, reformat it exFAT with default cluster size and use MBR rather than GPT before assuming it is too big.

Sources and Working References

• Papyrix Reader
• CPR-vCodex (reading-habits CrossPoint fork)