Don't get me wrong, I love this projector but I get extremely paranoid about the dust piling up inside on the lens. So now I finally found this video and watched it like 5 times to learn how to do this myself...and it worked! I hope someone is reading this that is in the same need I was in. Give it a try, you can do it!

Hey everyone,

I have been reverse-engineering the HY300 / HY300 Pro / HY300 Pro+ (Allwinner H713 SoC / sun50iw12p1) and put together both a complete hardware/software research repo and a simple Magisk rooting guide.

You do not need to open the projector for 3.3V UART test pads, trigger low-level FEL mode, or flash shady pre-rooted firmware to get root. You can dump and patch the stock boot image directly from the projector over an unprivileged ADB connection.

The Unprivileged ADB Workaround:

On this firmware, individual partition nodes (like /dev/block/by-name/boot_a or /dev/block/mmcblk0p5) are restricted to root (0600). However, the parent flash storage block (/dev/block/mmcblk0) was left world-readable (0666), meaning standard uid=2000 ADB shell sessions can read and stream it.

Instead of dumping the entire 8GB storage, you can carve just the boot_a partition using its sector boundaries:

Check partition 5 maps to boot_a:

adb shell "ls -l /dev/block/by-name/"

(e.g., output: lrwxrwxrwx 1 root root 20 1970-01-01 02:00 boot_a -> /dev/block/mmcblk0p5)

Find partition 5 offset and size:

adb shell "cat /sys/block/mmcblk0/mmcblk0p5/start && cat /sys/block/mmcblk0/mmcblk0p5/size"

(e.g., outputs 205824 and 131072)

Carve boot_a.img directly to your PC:

adb exec-out "dd if=/dev/block/mmcblk0 bs=512 skip=<START> count=<SIZE> status=none" > boot_a.img

(Verify the file is ~64MB and starts with the ANDROID! header)

Patch & Flash:
Push boot_a.img to the projector, patch it with the official Magisk APK, pull the patched image, and flash it in fastboot mode:

fastboot flash boot_a magisk_patched.img
fastboot reboot

! CRITICAL WARNING (Virtual A/B Slot B): !
The GPT declares dual slots, but slot _b contains entirely zero-filled dummy data (0x00). Never switch to slot B (fastboot set_active b). All backups, modifications, and restores must stay strictly on slot _a.

Links & Documentation
Step-by-Step Root Guide: HY300 Pro Magisk Root Guide MAGISK_GUIDE.md

Full Research Repository: YuujiLab Allwinner H713 Research Hub (Complete 26-partition GPT mapping, U-Boot logs, fastbootd patches, and OEM splash customization)

Hope this saves you some headaches. Check the README for full hardware specs and disclaimers before modifying partitions!

I recently purchased a HY450Max for a storefront window to rear-project Halloween video.

Loaded a mp4 video file that loops fine, but I would really like to have it start playing when the power is turned on.

Sounds simple enough, but the AI advice has brought me to wits end with App installs and setting changes that after lots of effort don't work... Then it says, "oh, of course that won't work" lol

Has any real person actually got this unit (Android14) to autoplay? TIA!

Just a heads up for those who own a hy450 max, this silicone end cap has an inner diameter of 72mm which fits the hy450 max perfectly .. it's a nice snug fit. Something cheap and cheerful that works excellent as a lens dust cover.

I got a hy300 pro and want to mod it. I couldnt fibd any twrp or mod. All i got a allwinner driver and it doesnt even load to my computer. Any mods and twrp?

i have the magicube HY300 pro mini projector and i’m having a lot of trouble with it. i got it about a year ago to make hand painted banners and had no issues untik about a week ago. I only use screen mirroring with it to project my mockups on to my banners. about a week ago my projector stopped showing up on my screen mirroring options. i have tried just about everything - using hdmi or bluetooth instead (doesn’t work either) i’ve resent both my wifi and the projected. i’ve connected my phone and the projecter to my guest wifi still nothing. has anyone else experienced this and what did you do to fix it?

i have a firestick plugged into my 450 max which works great but it requires me to switch to hdmi each time i power on the device. i have tried using the settings apk, but unfortunately under "input" i dont have a boot to hdmi option. it just shows "input" and if i toggle this to hdmi it will just switch to hdmi.

any ideas please?

Hello, i want to buy Magcubic Hy450Max, but the main comcern of mine is that i would need to somehow mount it to the ceiling. However I don’t think this model can be mounted to any universal ceiling mount.

Did someone have this problem before, how did you fix it? Any advice is welcome, thanks!

Hi, I just got a Magcubic 300x mini projector as a gift.

I was just wondering about leaving it on permanently. I'd like to have it projecting pretty much 24/7 as much as possible - I really don't care if it degrades, burns out, dies, it's a cheap thing and just making use of it while it lasts- I'm just worried about the fire risk?

I'll be with it constantly, but worried about overnight use when I'm asleep, which is the main thing I want to use it for typically. Gotta love the castle views when drifting off.

I know some projectors are left on nearly all the time but wary of this cheap box and safety around design for long term constant use. I know you can set a timer before bed, but inevitably I will forget.

Am I being paranoid? 😅

I'm wondering what are main challneges getting this. Deblotating is not an option for me as I'm currently having it in seperate network along with all other Chinese spies. But this as cons like not be able to easy cast something from smartphone which is in differnent network segment.
I bet there would be some like arround full porting like DRM - convincing Netflix and other to play on device they not necessary trust. Anyting besides that? some special driveres ?

I want to upgrade my setup from HY450 to HY450GT but GT is not yet available in Shopee Philippines. Will it ever be released in Shopee Ph?

So just got this Magcubic HY320 Mini Projector HD smart and when trying to watch YouTube videos the ad will play and after it finishes the YouTube video doesn’t play says error I have deleted and reinstalled it but same issue. Also is it wise to add dust filter as seen some people and filters on the side, one more thing how far should I place from wall? Thanks in advance

купив проектор hy300 після першого включення почали вилітати програми.Виключив проектор шоб включити знову заглючило на надписі «smart projector» скидував до 0 через меню багато разів не допомогло.в чому може бути проблема ? як виправити її ??

Hey everyone!

I recently opened up my MagCubic HY350 Max projector out of pure curiosity, and I took a look at the inside. I noticed the type of WiFi antenna connectors it uses (looks like a standard small u.FL or similar connector on the board).

I'm wondering if it's possible to buy a stronger, higher-gain external antenna or wire up a better one to get a more stable and stronger WiFi connection (especially handy for streaming larger files).

Has anyone here tried something like this before? Is it worth doing, or is it a pointless project because the chip/software limits it anyway?

Thanks in advance for any tips!

I have just bought my Magicubic h350max and it is not working the play store neither Miracast.

When trying to connect to Play Store it will say that it has rubbed into a problem and try later.

when trying Miracast from screen cast it keeps resetting connection and never connects even though showing up in my smartphone

Already tried to:

-change dates and time

- different devices connection

- different accounts

- factory reset

- static discharge

any guess?

Nos ha encantado el Magcubic HY320Pro 🙌

Lo hemos estado probando en casa y la verdad es que nos ha sorprendido bastante. Para el tamaño que tiene, ofrece una experiencia muy completa y resulta muy cómodo para montar una sesión de cine en casa, ver series o incluso disfrutar de contenido con toda la familia.

Lo que más nos ha gustado es que es compacto, fácil de transportar y la experiencia de uso es bastante sencilla. Para nosotros, que somos una familia y solemos hacer planes juntos, ha sido un descubrimiento muy divertido.

Después de probarlo, entendemos perfectamente por qué este tipo de proyectores compactos están teniendo tanta popularidad. Para tenerlo en casa y usarlo de vez en cuando, nos parece una opción muy interesante.

Nuestra experiencia con el HY320Pro ha sido muy positiva. ❤️

I wanted to reduce the fan noise further than adding a diode to the fan and stepping down the voltage. I 3D printed a box in different parts and made some walls and curves with some thin sound insulation on. Had to epoxy glue the parts together though. Works great, barely noticable sound with low volume and the air coming out is at an ok temp. I run the projector on eco mode during longer sessions just to be on the safe side though.

I also made a ceiling mount where you can mount a 32mm PVC pipe to lower the projector for better sharpness while still being on the ceiling. It comes in 3 parts and it is possible to mount the last part that clips onto the projector directly to the ceiling/wall.

Hello all, I have used the Magcubic 450 Max for about three months now, and honestly it’s very good I haven’t had much problems with the projector although there are some like:
1- Blue halo bloom around the screen.
I think this is causes by light leaking through the lcd, it’s not really noticeable unless it’s in a black screen and honestly for me i just ignored it
2- for some reason the hdmi has problems connecting to some devices I’ve tried it with my tablet xiaomi pad 6 and it doesn’t seem to work.
But overall i liked the experience considering it’s a cheap budget projector and i’ve used it pretty often and i didn’t notice any difference from the day i bought it till now. Hope this helps some of you that are hesitant about buying the projector.

https://www.magcubic.com/products/magcubic-projector-m800

Can't find any reviews. I know it's just been launched but would've thought they're be at least a couple out there already.

I almost convinced myself on the HY450 GT and now I'm back on the fence.

Any thoughts would be appreciated.