JCG JHR-AC876M

abgn+ac (AC2600)
wireless router
3rd Party Firmware
dd-wrt	Status Unknown
OpenWrt	Supported
Tomato any flavor	Incompatible
Gargoyle	Status Unknown
Platform
Brand • Model • Rev	JCG JHR-AC876M
FCC ID	none specified
Type	wireless router
CPU1 Y	MediaTek MT7621AT
CPU1 Type	MIPS 1004Kc
CPU1 Speed	880 MHz ( 2 cores ) 16-bit
Flash1 Chip	Winbond W25Q128JVSQ
Flash1 Size	16 MiB 16,777,216 B <br />131,072 Kib <br />16,384 KiB <br />128 Mib <br />0.0156 GiB <br />
RAM1 Size	256 MiB 268,435,456 B <br />2,097,152 Kib <br />262,144 KiB <br />2,048 Mib <br />0.25 GiB <br />
RAM1 Chip	Nanya NT5CB128M16
ETH chip1	MediaTek MT7621AT
Switch	MediaTek MT7621AT
Ethernet Port Count	1-1GbE-WAN 4-1GbE-LAN
Wired Standard	IEEE 802.3i/3u/3ab
802dot11 OUI: none specified
Stock bootloader	U-Boot
Expansion IF types	USB 2.0, USB 3.0
USB ports	2
USB Hub Compatible	Untested
Power	12 VDC, 3 A
Other
3rd Party Firmware Support	OpenWrt • (List | Dev | DLs)
Radio 1
Chip1	MediaTek MT7615N
Wireless interface OUI	none specified
Antenna Connector Type	none specified
MIMO status	4x4:4
Wireless Standard	IEEE 802.11b/g/n
n-QAM	up to 800 Mbps
802.11n	up to 600 Mbps
802.11g	up to 54 Mbps
802.11b	up to 11 Mbps
WiFi Operating Frequency	2.4 GHz
Radio 2
Chip1	MediaTek MT7615N
Wireless interface OUI	none specified
Antenna Connector Type	none specified
MIMO status	4x4:4
Wireless Standard	IEEE 802.11a/n/ac
802.11ac	up to 1733 Mbps
802.11n	up to 600 Mbps
802.11a	up to 54 Mbps
WiFi Operating Frequency	5 GHz

For a list of all currently documented MediaTek chipsets with specifications, see MediaTek.

For a list of all currently documented JCG devices with specifications, see JCG.

• 800 Mbps - 4SS 2.4GHz 802.11n (40MHz chan., 256-QAM),

• 1733 Mbps - 4SS 5GHz 802.11ac (80MHz chan.) = AC2600 class

Flashing

Flashing OpenWrt

On the OpenWrt ToH (techdata entry)
On the OpenWrt Wiki

Target: ramips
Subtarget: mt7621
Package architecture: mipsel_24kc
Supported Since Commit
Support started version: 21.02.0
Current supported version: 25.12.2

LAN Hardware: MediaTek MT7621AT
WLAN Hardware: MediaTek MT7615N
Installation method(s):
GUI OEM, see git-commit
Recovery method(s):
U-Boot web recovery, see git-commit

git • >>

ramips: add support for JCG JHR-AC876M JCG JHR-AC876M is an AC2600M router Hardware specs: SoC: MT7621AT 2.4GHz: MT7615N 4x4 @ PCIe0 5GHz: MT7615N 4x4 @ PCIe1 Flash: Winbond W25Q128JVSQ 16MiB RAM: Nanya NT5CB128M16 256MiB USB 2.0 and 3.0 ports 6 LEDs, 3 of which are connected to SoC GPIO Reset and WPS buttons Flash instructions: Stock to OpenWrt: Upload factory.bin in stock firmware's upgrade page, do not preserve settings OpenWrt to stock: Push and hold the reset button for 5s while power cycling to enter recovery mode; Visit 192.168.1.1 and upload stock firmware MAC addresses map: 0x0004 *:1c wlan2g/wan/label 0x8004 *:20 wlan5g 0xe000 *:1b lan 0xe006 *:1a not used in stock fw Signed-off-by: DENG Qingfang