D-Link DIR-842 rev C2

multiple revisions of this device, use caution

abgn+ac (AC1200)
AC1200 Wi-Fi Gigabit Router
Wikipedia	D-Link
3rd Party Firmware
dd-wrt	Status Unknown
OpenWrt	Supported
Tomato any flavor	Incompatible
Gargoyle	Status Unknown
Platform
Brand • Model • Rev	D-Link DIR-842 rev C2
FCC ID	none specified
Type	wireless router
CPU1 Y	Qualcomm Atheros QCA9563
CPU1 Speed	750 MHz
Flash1 Chip	Brand? Model?
Flash1 Size	16 MiB 16,777,216 B <br />131,072 Kib <br />16,384 KiB <br />128 Mib <br />0.0156 GiB <br /> (SPI NOR)
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 /> (DDR2)
RAM1 Chip	Brand? Model?
ETH chip1	Qualcomm Atheros QCA9563
Switch	Qualcomm Atheros QCA8337N
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	1
USB Hub Compatible	Untested
Power	12 VDC, 1 A
Other
3rd Party Firmware Support	OpenWrt • (List | Dev | DLs)
Retail
Availability	End of Life
Radio 1
Chip1	Qualcomm Atheros QCA9563
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	Qualcomm Atheros QCA9888
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
CPU1 brand Radio1 chip1 brand Radio2 chip1 brand D-Link DIR-842 rev A1 Realtek Realtek Realtek D-Link DIR-842 rev C1 Qualcomm Atheros Qualcomm Atheros Qualcomm Atheros D-Link DIR-842 rev C2 Qualcomm Atheros Qualcomm Atheros Qualcomm Atheros D-Link DIR-842 rev C3 Qualcomm Atheros Qualcomm Atheros Qualcomm Atheros D-Link DIR-842 rev G1 Realtek Realtek Realtek

For a list of all currently documented Qualcomm Atheros (QCA) chipsets with specifications, see Qualcomm Atheros.

For a list of all currently documented D-Link devices with specifications, see D-Link.

• 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)
On the OpenWrt Wiki

Target: ath79
Subtarget: generic
Package architecture: mips_24kc
Supported Since Commit
Support started version: 21.02.0
Current supported version: 25.12.2

LAN Hardware: Qualcomm Atheros QCA8337N
WLAN Hardware: Qualcomm Atheros QCA9563, Qualcomm Atheros QCA9888
WLAN Comment: 2x2:2 MIMO both bands
Install Comment:
GUI OEM, see git-commit
Recovery Comment:
see git-commit

git • >>

ath79: add support for D-Link DIR-842 C2 Hardware spec of DIR-842 C2: SoC: QCA9563 DRAM: 128MB DDR2 Flash: 16MB SPI-NOR Switch: QCA8337N WiFi 5.8GHz: QCA9888 WiFi 2.4Ghz: QCA9563 USB: 2.0 Flash instructions: 1. Upgrade the factory.bin through the factory web interface or the u-boot failsafe interface. The firmware will boot up correctly for the first time. Do not power off the device after OpenWrt has booted. Otherwise the u-boot will enter failsafe mode as the checksum of the firmware has been changed. 2. Upgrade the sysupgrade.bin in OpenWrt. After upgrading completes the u-boot won't complain about the firmware checksum and it's OK to use now. 3. If you powered off the device before upgrading the sysupgrade.bin, just upgrade the factory.bin through the u-boot failsafe interface and then goto step 2.