ZyXEL Keenetic Viva (KN-1910)

abgn+ac (AC1200)
wireless router
Wikipedia	ZyXEL
3rd Party Firmware
dd-wrt	Status Unknown
OpenWrt	Supported
Tomato any flavor	Incompatible
Gargoyle	Status Unknown
Platform
Brand • Model • Rev	ZyXEL Keenetic Viva (KN-1910)
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	Macronix MX30LF1G18AC-TI
Flash1 Size	128 MiB 134,217,728 B <br />1,048,576 Kib <br />131,072 KiB <br />1,024 Mib <br />0.125 GiB <br /> (Parallel NAND)
RAM1 Size	128 MiB 134,217,728 B <br />1,048,576 Kib <br />131,072 KiB <br />1,024 Mib <br />0.125 GiB <br /> (DDR3 -1600)
RAM1 Chip	Winbond W631GG6MB-12
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 ports	2
USB Hub Compatible	Untested
Serial Port (UART)	yes, 3.3V TTL, (57600 8N1)
Other
3rd Party Firmware Support	OpenWrt • (List | Dev | DLs)
Radio 1
Chip1	MediaTek MT7615DN
Wireless interface OUI	none specified
Antenna Connector Type	none specified
MIMO status	2x2:2
Wireless Standard	IEEE 802.11b/g/n
802.11n	up to 300 Mbps
802.11g	up to 54 Mbps
802.11b	up to 11 Mbps
WiFi Operating Frequency	2.4 GHz
Radio 2
Chip1	MediaTek MT7615DN
Wireless interface OUI	none specified
Antenna Connector Type	none specified
MIMO status	2x2:2
Wireless Standard	IEEE 802.11a/n/ac
802.11ac	up to 867 Mbps
802.11n	up to 300 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 ZyXEL devices with specifications, see ZyXEL.

• 300 Mbps - 2SS 2.4GHz 802.11n (40MHz chan.),

• 867 Mbps - 2SS 5GHz 802.11ac (80MHz chan.) = AC1200 class

Flashing

Flashing OpenWrt

On the OpenWrt ToH (techdata entry)

Target: ramips
Subtarget: mt7621
Package architecture: mipsel_24kc
Supported Since Commit
Support started version: 25.12.0
Current supported version: 25.12.2

LAN Hardware: MediaTek MT7621
WLAN Hardware: MediaTek MT7615DN
WLAN Comment: 2x2:2 MIMO on both bands
Installation method(s):
see git-commit
Recovery method(s):
see git-commit

git • >>

ramips: mt7621: add support for Keenetic Viva (KN-1910) Specification: SoC: MediaTek MT7621A RAM: 128M DDR3, Winbond W631GG6MB-12 (DDR3-1600) or Winbond W631GG6MB-11 Flash: 128M, Macronix MX30LF1G18AC-TI (Dual Boot, Parallel-NAND) Switch: MT7530, 5 ports 1Gbps WiFi: MT7615DN, 2.4GHz 802.11n and 5GHz 802.11ac USB: 2 ports USB 2.0 GPIO: 4 buttons (Wi-Fi, Reset, FN1, FN2), 4 LEDs (Power, Internet, FN, Wi-Fi), USB port power controls LAN: RF-EEPROM + 0x04 WAN: RF-EEPROM + 0x28 2.4 GHz: RF-EEPROM + 0x04 5 GHz: 2.4GHz + 82:00:00:00:00:00 Disassembly: There are 2 screws at the bottom. After removing the screws, pry the gray plastic part around (it is secured with latches) and remove it. Serial Interface: The serial interface can be connected to the 4 pin dots to the left of the radiator. Pins (from LAN ports to LEDs): 3.3V (do not connect) TX RX GND Settings: 57600, 8N1 Flashing via OEM recovery software: 1. Download the OEM recovery software from the manufacturer's website 2. Download the firmware image (for OpenWRT it is *-squashfs-factory.bin), rename it to KN-1910_recovery.bin 3. Replace the file in the fw folder OEM recovery software with the file from step 2. 4. Run the OEM recovery software and follow the instructions. Flashing via TFTP: 1. Connect your PC and router to port 1-4, configure PC interface using IP 192.168.1.2, mask 255.255.255.252 2. Serve the firmware image (for OpenWRT it is *-squashfs-factory.bin) renamed to KN-1910_recovery.bin via TFTP 3. Power up the router while pressing Reset button on the back 4. Release Restart button when Power LED starts blinking To revert back to OEM firmware: The return to the OEM firmware is carried out by using the methods described above with the help of the appropriate firmware image. Keenetic's bootloader supports booting a LZMA compressed kernel but seems to fail if the uncompressed data is larger than a fixed buffer therefore it is safer to use a uimage-lzma-loader. When using OEM bootloader, the firmware image size cannot exceed the size of one OEM «Firmware_x» partition or Kernel + rootFS size.