R36H Wiki: Complete Reference

A factual, single-page reference for the R36H retro gaming handheld — hardware, the confusing R36 model naming, firmware options, what it can actually emulate, and the known issues worth knowing before you buy.

1. Overview

The R36H is a budget Linux-based retro gaming handheld built around the Rockchip RK3326 platform. Its defining trait versus the closely-related R36S is form factor: the R36H uses a horizontal (landscape) layout with a 3.5-inch 4:3 IPS display, where the R36S is vertical.

It is not an official product of any console manufacturer. Like most devices in this category it is produced by multiple sellers under the same model name, which means bundled accessories, pre-loaded card capacity and advertised game counts vary between listings. The underlying hardware is broadly consistent.

2. Hardware Specifications

Processor	Rockchip RK3326 — quad-core ARM Cortex-A35 @ 1.5GHz
GPU	Mali-G31 MP2
RAM	1GB DDR3L
Display	3.5-inch IPS LCD, 640×480 (4:3), ~229 PPI
Battery	3,000mAh Li-Po, user-replaceable, 5–8 hours typical
Charging	USB-C, ~2 hours to full
Storage	Dual microSD slots — TF1 (system), TF2 (games); up to 256GB each
Controls	D-pad, dual analog sticks, A/B/X/Y, L1/L2/R1/R2, Start, Select
Audio	Mono speaker + 3.5mm headphone jack
Connectivity	USB-C with OTG (controllers/keyboards). No built-in Wi-Fi
OS	Linux-based stock firmware; supports ArkOS, ROCKNIX, JELOS and others
Weight	~186g
Body	Polycarbonate shell, multiple colour options

Full breakdown: R36H technical specifications. Deep dives on the display, the battery and custom firmware support.

3. Model Naming & Variants

The R36 family naming is genuinely confusing because different sellers apply different suffixes. Here is how the common names relate:

Name	What it usually means
R36S	The original — vertical (portrait) form factor, same RK3326 platform. Compare
R36H	Horizontal (landscape) variant of the same platform. The subject of this page.
R36 Ultra	Vertical, RK3326, generally without a replaceable battery. Compare
R36S Max / R36 Max	Step-up tier — larger display, higher-tier chipset. Compare
R36H Pro Max	Seller-applied label for larger-screen variants; not a single standardised model. Compare

You will also see the R36H sold under seller brand names (Kiumo, Boyhom and others). These are typically the same reference hardware under a different label rather than distinct devices.

4. Firmware

The R36H ships with a functional Linux-based stock firmware, but most owners eventually move to a community custom firmware on a second SD card. The stock card stays untouched, so any change is reversible.

Firmware	Character	Guide
ArkOS	Most mature and best documented; the safe default	Install guide
ROCKNIX	Actively maintained successor lineage to JELOS	Setup guide
JELOS	Historically popular; superseded by ROCKNIX	Setup guide
DarkOS	Clean UI, pre-configured emulators, fast to set up	Install guide
GameLab OS	Newer entrant, growing community interest	Install guide

Because the R36H is an RK3326 device, it is generally supported through R36S / RK3326 device profiles rather than an R36H-specific build.

5. Emulation Compatibility

The R36H is comfortably an 8-bit-through-PS1 machine. Heavier systems are possible but inconsistent.

Tier	Systems
Full speed	NES, SNES, Game Boy / GBC / GBA, Genesis / Mega Drive, Master System, Neo Geo, Atari 2600/7800, TurboGrafx-16, WonderSwan, Virtual Boy
Strong	PlayStation 1 — smooth in most titles; Arcade (MAME/FBA) — most games run well
Mixed	Nintendo 64 — many titles playable, some need per-game tweaks
Limited	Dreamcast, PSP, Nintendo DS — lighter titles only, expect to tune settings

Per-platform detail and recommended titles: NES · SNES · GBA · PS1 · N64 · PSP · Arcade · best games overall.

6. Known Issues & Fixes

• Stock SD card quality. The bundled card is the most common failure point. Replacing it with a name-brand card early prevents most corruption problems — see the SD card setup guide.
• Screen panel variation. R36H units ship with different display panels. If colours or orientation look wrong after flashing custom firmware, the panel type must be selected in settings — see the screen fix guide.
• No Wi-Fi. The R36H has no built-in wireless. Box art scraping and online features require firmware that supports a USB Wi-Fi dongle, or must be done on a computer.
• Boot problems after flashing. Usually a card or image issue rather than hardware — see troubleshooting.

7. Buying

Because multiple sellers list the same model, check the individual listing for what is actually included and read recent reviews before ordering. Our honest assessment of whether it is worth it lives in the R36H review, and the buying page covers variants and recommended accessories.

See also: FAQ · all comparisons · all guides · where to buy