Meraki Z3C

multiple revisions of this device, use caution

abgn+ac (AC1200)
Cloud Managed Teleworker Gateway
Homepage	Product page
Wikipedia	Cisco Systems
3rd Party Firmware
dd-wrt	Status Unknown
OpenWrt	Supported
Tomato any flavor	Incompatible
Gargoyle	Status Unknown
Platform
Brand • Model • Rev	Cisco Meraki Z3C
FCC ID	none specified
Type	wireless router
CPU1 Y	Qualcomm IPQ4029
CPU1 Type	ARM Cortex-A7
CPU1 Speed	700 MHz ( 4 cores )
Flash1 Chip	Brand? Model?
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 /> (NAND)
RAM1 Size	512 MiB 536,870,912 B <br />4,194,304 Kib <br />524,288 KiB <br />4,096 Mib <br />0.5 GiB <br />
RAM1 Chip	Brand? Model?
ETH chip1	Qualcomm IPQ4029
Switch	Qualcomm Atheros QCA8075
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 3.0
USB ports	1
USB Hub Compatible	Untested
PoE	802.3af, standard
Power	? VDC, ? A
Serial Port (UART)	yes, 3.3V TTL, (115200 8N1)
JTAG Port	no
Flags: LTE
Other
3rd Party Firmware Support	OpenWrt • (List | Dev | DLs)
Radio 1
Chip1	Qualcomm IPQ4029
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 IPQ4029
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 Cisco Meraki Z3 Qualcomm Qualcomm Qualcomm Meraki Z3C Qualcomm Qualcomm Qualcomm

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

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

• 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: ipq40xx
Subtarget: generic
Package architecture: arm_cortex-a7_neon-vfpv4
Supported Since Commit
Support started version: unknown
Current supported version: snapshot

LAN Hardware: Qualcomm Atheros QCA8075
LAN Comment: Port 5 has POE output (802.3af)
WLAN Hardware: Qualcomm QCA4019
WLAN Comment: 2.4GHz 2x2 MIMO, 5GHz 2x2 MIMO
Installation method(s):
see git-commit
Recovery method(s):
see git-commit

git • >>

ipq40xx: add support for Cisco Meraki Z3C This commit adds support for the Meraki Z3C "Teleworker" device with 802.11ac, LTE Cat 3 modem, and an integrated 5 port Gigabit switch. Port 5 has POE output (802.3af). The WAN port is used for tftp booting in U-Boot. This device ships with secure boot, and cannot be flashed without an external programmer. ||| |--|--| |Model|Z3C| |CPU|Qualcomm Atheros IPQ4029| |Flash MB|128 NAND| |RAM MB|512| |WLAN Hardware|Qualcomm Atheros IPQ4029| |WLAN 2.4GHz|b/g/n 2x2| |WLAN 5.0GHz|a/n/ac 2x2| |WWAN|LTE Cat 3| |Ethernet 1Gbit ports|5| The LAN/WiFi MAC addresses are sourced from an internal I2C EEPROM. Z3C-HW-NA (NA: North America) supports LTE bands: 2,4,5,13,17 Z3C-HW-WW (WW: World-wide) supports LTE bands: 1,3,7,8,20 Disassembly: Remove the four T8 screws on the bottom of the device under the rubber feet. Using a guitar pick or similar plastic tool, insert it on the side between the bottom case and the side, pry up gently. The plastic bottom has 18 latches around the perimeter (but none on the rear by the Ethernet ports). Remember to remove the SIM tray! Gently remove the metal RF shield on the bottom of the PCB. The TSOP48 NAND flash (U30, Spansion S34ML01G200TFV00) is located on the bottom side of the PCB (facing you as you remove the bottom plastic). To flash, you will need to desolder the TSOP48. Attempts to flash in-circuit using a 360 clip were unsuccessful. The SOIC8 I2C EEPROM (U32, Atmel 24C64) is located on the bottom side of the PCB under a metal RF shield. It can be flashed in circuit using a chip clip. You may have to bend the RF shield up to fit the chip clip. The UART header is on the top (opposite) side of the PCB. You do not need to remove any more screws to remove the PCB. The PCB has some thermal interface material for heat dissipation and will be slightly difficult to remove the first time. Gently pry up on the green PCB from one of the front corners until the thermal pads break contact with the top case. You can then lift out the entire PCB, including the attached LTE/WiFi antennas. Installation: The dumps to flash can be found in this repository: https://github.com/halmartin/meraki-openwrt-docs/tree/main/z3c The device has the following flash layout (offsets with OOB data): ``` 0x000000000000-0x000000100000 : "sbl1" 0x000000100000-0x000000200000 : "mibib" 0x000000200000-0x000000300000 : "bootconfig" 0x000000300000-0x000000400000 : "qsee" 0x000000400000-0x000000500000 : "qsee_alt" 0x000000500000-0x000000580000 : "cdt" 0x000000580000-0x000000600000 : "cdt_alt" 0x000000600000-0x000000680000 : "ddrparams" 0x000000700000-0x000000900000 : "u-boot" 0x000000900000-0x000000b00000 : "u-boot-backup" 0x000000b00000-0x000000b80000 : "ART" 0x000000c00000-0x000007c00000 : "ubi" ``` * Dump your original NAND (if using nanddump, include OOB data). * Decompress `u-boot.bin.gz` dump (contains OOB data) and overwrite the `u-boot` portion of NAND from `0x738000-0x948000` (length `0x210000`). * Decompress `ubi.bin.gz` dump (contains OOB data) and overwrite the `ubi` portion of NAND from `0xc60000-0x8400000` (length `0x77a0000`). * Dump your original EEPROM. Change the byte at offset `0x49` to `0x1e` (originally `0x2a`). Remember to re-write the EEPROM with the modified data. * This can be done on Linux via the following command: `printf "\x1e" | dd of=/tmp/eeprom.bin bs=1 seek=$((0x49)) conv=notrunc` **Note**: the device will not boot if you modify the board major number and have not yet overwritten the `ubi` and `u-boot` regions of NAND. * Resolder the NAND after overwriting the `u-boot` and `ubi` regions. OpenWrt Installation: * After flashing NAND and EEPROM with external programmers. Plug in an Ethernet cable and power up the device. * The new U-Boot build uses the space character `" "` (without quotes) to interrupt boot. * Interrupt U-Boot and `tftpboot` the OpenWrt initramfs image from your tftp server ``` dhcp setenv serverip <your_tftp> tftpboot openwrt-ipq40xx-generic-meraki_z3c-initramfs-uImage.itb ``` * Once booted into the OpenWrt initramfs, created the `ART` ubivol with the WiFi radio calibration from the mtd partition: ``` cat /dev/mtd10 > /tmp/ART.bin ubiupdatevol /dev/ubi0_1 /tmp/ART.bin ``` * `scp` the `sysupgrade` image to the device and run the normal `sysupgrade` procedure: ``` scp -O openwrt-ipq40xx-generic-meraki_z3c-squashfs-sysupgrade.bin root@192.168.1.1:/tmp/ ssh root@192.168.1.1 "sysupgrade -n /tmp/openwrt-ipq40xx-generic-meraki_z3c-squashfs-sysupgrade.bin" ``` * OpenWrt should now be installed on the device. * Note: To use the LTE modem as a WWAN, you must install `modemmanager` (you probably also want `luci-proto-modemmanager`) and then configure the modem for your provider. Due to OpenWrt policies these packages are not included in the initramfs/sysupgrade image. Signed-off-by: Hal Martin Link: https://github.com/openwrt/openwrt/pull/23307 Signed-off-by: Robert Marko