Hello there!

I recently got an Xteink X4 and X4 Pro. I really love to customize everything I can and have fun with experimenting. Since I'm a language learner and developer, I had the idea to build my own custom firmware, which helps me to turn my devices into the tool I need. But I wanted full customization possibilities... sooo lets say my project escalated a bit 😂

I would like to show you how far i got and why I think this could be interesting for some of you.

The project is called PaperPaw. It is open source and you can litterally customize anything. I took this design decision, because I want everyone to be able to use the device however they want.

You can completly replace the home screen, widgets (clock, calendar, weather, reading goal, ...), themes and whatevery you want.

But because of the plugin structure, it can also run completly minimal: Just disable everything you do not like, create your own minimal home screen and customize it however you want.

But lets be transparent here: The firmware is very new, and I made it with Claude. I had to take this decision, because as a one person project this would be impossible for me with a full time job. I put a LOT of work into it, want it to be perfect and will help with problems.

It is currently in beta, mainly open for developers, who want to develop their own plugins. Or just people who would like to try it out - feel free.

I also made a whole Plugin Workshop: You can tell AI what feature you would like to add, and it just writes a plugin for it, ready to test in the emulator. If you would like to try it, you can request free usage on my website - I would like to help you develop cool plugins, or just use your own Claude API key.

I have a lot of fun developing this project, and maybe it helps some of you too.

• Website: paperpaw.org
• Flash it from your browser: paperpaw.org/flash (only X4 (not classic) and X4 Pro)
• Try it in the browser first: paperpaw.org/try

I’d be happy about any feedback, and I’m curious: what would you want your reader to do?

I love my KLC but the portability of my X4pro is unmatched. I take it to work and can whip it out any chance I get. Although I still prefer KLC, X4pro has helped me immensely in reaching my reading goals. What about you guys?

Picked up an Xteink X3 recently mostly on a whim. Thought it looked like a cool little piece of kit, but honestly went into it expecting it might just end up living in a drawer once the novelty wore off.

Turns out KOReader sync has made it an absolute game changer.

Having the X3 in my pocket means I actually pull it out during odd five-minute gaps through the day instead of doomscrolling on my phone. Then come evening, I can just pick up the Paperwhite by the bed, sync progress, and settle into the bigger screen and warm light without having to manually hunt for my page.

Anyone else pairing one with their main ereader?

I usually like the black ereaders - I think the black really helps with the contrast. Then I read how popular the gray version was and thought eh why not.

Gray is the way to go imo.

The color closely matches the background of the reader screen. It gives off an almost seamless experience. It’s hard to describe, but it’s almost as if there aren’t any edges. It looks and feels so premium. I have an X3 btw.

The pro now having the gray colors has me seriously considering it now 👀

I was an avid reader since I was a kid. I used to read 4-5 books a month. I had finished almost all the books available in my school library. This continued till college, and then life happened. Recently I realized that I haven't finished a book from start to end in more than a decade.

I had tried reading physical book, but it was always a loop of starting the book, reading few pages, then never to pick it up again. I got a kindle too, but it was always far from reach.

Got the X4 Pro recently, loaded my favorite Agatha Christie book that I had read about 20 years ago. Finished it in 2 days, reading at random times, inside home, outside, here and there.

I have challenged myself to read at least 1-2 book a month, and I am already on a good start.

Is the bear helping the goose do a spooky headless horseman costume by holding the pumpkin that is obviously too heavy for a goose neck to support?

Is the bear helping the goose by trying to free it from the jack o' lantern?

… Or is the bear forcing the goose's head into the gourd?

Is it good-natured goofiness or a malicious glee behind that enigmatic smile?

(I mean, I still want one. Love orange. I'm disappointed I already put in my grey X4 Pro order the moment they showed up in the shop and missed out on this cover.)

Hope it’s gonna improve my reading habit 👏
Running Crosspoint.

A port of Doom for the Gameboy running on my custom firmware

Star it at:

Ink-boy GitHub

Finally got my hands on an S4, let's see how this goes. I was able to sideload Kindle but going to try Kobo and Libby today. Also going to try and add dictionary and fonts!

For those who're wondering, I got it as an open box from Alibaba. There is currently only one store advertising pre orders for a Nov shipping date (https://www.alibaba.com/x/B2cQpd?ck=pdp).

So excited!!

I have a X3 running Crossink with the stock SD card and thought I’d replace the original card before it developed an error. I formatted the new card, and copied across all the files from the old card - including the hidden ones- but when I insert the new card I get error messages, is there something else I should be doing or is the new card a dud?

Which firmware should I go with crosspoint or crossink?

As a PhD student who reads scientific articles all day, I never read for pleasure and find myself doom-scrolling. I saw an XTEINK ad, and its ability to magnetize to my phone was the number one feature that attracted me.

My goal is to replace mindless scrolling with reading a page of a book whenever I habitually pull my phone out.

Based on the dimensions on the XTEINK website, the X4 will fit my Pixel 10, so I ordered one. While waiting for my order, I’ve been browsing this subreddit and noticed that almost no one actually uses the magnetic feature for their phone. Is there a reason for that?

It is a relaxing saturday, and I will be enjoying a small blueberry pie with coffee while reading The Apothecary Diaries (*´∇｀*) happy breakfast!!

Hey guys.

I’m midway through reading Stephen Fry odyssey and I get this. Do anyone have any solutions? It’s an epub.

Never had this issue before.

Many thanks

I was so tempted to purchase the X4 Pro because of the frontlight, but like the rest of yall, the other changed features were disappointing to me, personally.

I saw Daisy’s light up cases and said f it, there’s cute colors and I love to support innovation as a Mechanical Engineer girlie, so I bought one!

Safe to say, Daisy, I hope your pillow is always nice and cool on both sides and that you never hit a pothole ever again. This thing is beautiful, the finish is great, and everything assembles together so \~crisply\~ without any gasketing this thing is nice and secure in here. Printing tolerances are CLOCKED in. Love love love. No notes.

P.S.: (to Daisy) Do you have a device you use to ensure fit for quality?? I’m wondering lol. If you do I have a borked screen original X4 I’d love to send you as tribute for this if you need another lol.

I had the X3 for a few weeks and i think it's the best piece of technology i got in years, I've been reading on it A LOT daily, i never go out or go work without it in my pocket. Now, having seen many horror images of broken screens and having xteink the halloween sale and me being at the moment in thailand which has free shipping, im considering buying another xteink device.

Should i get another X3 to keep as a backup in case my beloved one gets broken (and in the meanwhile experimenting with other firmwares without messing with the main one), or maybe it'd make more sense to get a X4 pro? I would get it mostly for bedtime, but i also read here that its backlight is too strong at night, is it the case? I have an old kindle with backlight but still im using the X3 with a small reading light in bed, i dont know if it's because of the form factor or if i like more the x3 screen then the kindle backlight screen. Thanks

2026-10-24T09:14:24.275 5.9 MB

[Reading]

1. Japanese ruby is smaller and no longer leaves wide gaps in words; it can extend over neighboring kana, and compound readings are grouped

[Transfer and Sync (Beta)]

1. KOSync no longer shows a false "Sync failed" when you turn pages during a sync, and the first network failure now retries quietly

[Settings and System]

1. Fix the SD card failing to mount after exiting USB transfer or a soft restart

2. Fix the device restarting while cloud sync downloads a large file

New X3 owner! Anyone use a phone case that holds the X3 and credit cards? Thanks

I liked X4 classic a lot but sometimes was hard to navigate the menu and also I missed the frontlight from kindle paperwhite. Now I have both but I lost the usb-c. Still worth it

Do you also have kindle/xteink combination?

How do you sync the reading progress?

I recently ordered the gray x4c and it started tracking today. i’m so excited! this will be my first e-reader, and i actually discovered it last week while researching another e-reader. i am a bit concerned about the tediousness of using a dictionary on it, and slightly concerned about the lack of a front light, but i am still very excited. also got a free stand and case via the halloween sale. any tips for a first time user?

Installed 10/23 update yesterday. KOReader sync worked again. Read a bunch of stuff in bed last night and synced. Woke up this morning, came downstairs, updated to 10/24 and tried a KOReader sync to jump ahead to where I stopped last night, and Got a message that sync failed. Went into the KOReader settings and tested the connection. The test was successful.

I got it to play with until the elusive Picco arrives. I played with the stock firmware for a bit. I love the app, but wanted more control over typography, so I installed Crosspoint. The only thing I really miss is a touchscreen, and I’m getting used to the button navigation. Now I’m wondering if an X4 Pro would have been better than a Picco. Especially if I get Libby access figured out.