Sorry Jeff my bad, I did a check out of openwrt master on Monday and saw the DTS file for the ar750s with the NOR definitions in there so assumed the changes you were talking about had been merged back in already. Have been using that build machine to focus on another project but if there’s anything I can do to help out feel free to shoot me a PM. (I have a fresh master trunk and a 750s with serial console hooked up and ready for playing/testing).
A couple of updates that may be useful for anyone else working on this:
Serial, AR750S is “Deaf”
Two of the eBay-sourced “FTDI” adapters that I have used in the past with a variety of devices seem unable to drive the RX pin of the AR750S sufficiently or properly to send data to the device over serial. The serial pins appear to be 2.5 V logic. Using an Adafruit FTDI Friend resolved the issue.
Uploading Combined UBI Image Through U-Boot
The factory U-Boot doesn’t like post of *-factory.ubi, failing with
## Error: input file format error!
## Error: couldn't find start of data in next packet!
Creating a symlink to, for example, factory.bin allows use of
curl -v -F 'gl_firmware=@factory.bin' http://192.168.1.1/index.html
to upload NAND-based firmware (with the current GL.iNet U-Boot image).
No, it’s not booting completely yet and am working through challenges in getting the NAND driver to load. Edit: This may be due to there not being a NAND driver for the ath79 architecture. Looking into that now.
[ 0.299727] ath79-spi 1f000000.spi: cs1 >= max 1
[ 0.304503] spi_master spi0: spi_device register error /ahb/spi@1f000000/flash@1
[ 0.312184] spi_master spi0: Failed to create SPI device for /ahb/spi@1f000000/flash@1
2019-01-28:
There are no NAND drivers for ath79 that are acceptable for upstream Linux or OpenWrt and it is exceptionally unlikely that there will be prior to Kernel 4.19 being adopted for ath79.
See, for example ath79: fix GL-AR300M nand support by mennozon · Pull Request #1428 · openwrt/openwrt · GitHub
To be clear, OpenWrt NOR-based targets should be functional, when they are available.
Hi
I’ve found this thread whilst trying to get OpenWRT 19.07.02 on my GL-AR750S.
I’m not that familiar with how OpenWRT works and is built - do I understand correctly that there isn’t a build available for my router and I need to make one myself?
Thanks!
stable Index of /releases/19.07.2/targets/ar71xx/generic/
snapshot Index of /snapshots/targets/ath79/nand/
read openwrt general wiki/docs on how to install/upgrade
cheers
Hi
I followed the instructions here: [OpenWrt Wiki] GL.iNet GL-AR750S (under " OEM easy installation").
And used the current release linked here (gl-ar750s-squashfs-sysupgrade.bin): Index of /releases/19.07.2/targets/ar71xx/generic/
The uploaded image file does not contain a supported format. Make sure that you choose the generic image format for your platform.
I also tried openwrt-ath79-nand-glinet_gl-ar750s-nor-nand-squashfs-sysupgrade.bin but received the same erorr.
use .img via uboot and .tar from luci
if you have problems with stable:
start from snapshot factory image:
cheers
Hi @ganam25324 thanks for your repsonse!
I’m not quite sure what you’re saying - I understand the debrick tutorial but my router is on the latest GL firmware (3.101).
For both of the files (.bin and .img) you posted I get the following error:
I get the exact same error for the two .bin files you posted previously.
Thanks again!
that screenshot looks like luci, if it is not accepting image follow instruction in debrick tutorial and falsh snapshot factory image via uboot not luci:
cheers
1 Like
Thanks! I understand now. I was able to flash with the img provided using the instructions above (Debrick via Uboot - GL.iNet Docs).
I then found that the factory img did not contain luci so I had no web UI.
So I did:
scp openwrt-ath79-nand-glinet_gl-ar750s-nor-nand-squashfs-sysupgrade.bin root@192.168.1.1:/tmp/
ssh root@192.168.1.1
sysupgrade -v openwrt-ath79-nand-glinet_gl-ar750s-nor-nand-squashfs-sysupgrade.bin
However, this also doesn’t have luci:
root@OpenWrt:~# opkg list-installed | grep luci
root@OpenWrt:~#
This is a bit off topic now - but I do I understand correctly that I should install luci manually for this image?
Thanks again for your help.
snapshot dont have luci by defaulf, you just need to install luci, no need to try to flash again.
fix your cofig for minimun internet connectivity via ssh:
vi /etc/config/network
and then:
opkg update
opkg install luci-ssl
also next time no need to use factory image you can use sysupgrade image, if luci doesnt accept image try from ssh or uboot will do.
next release will fix this… ar750s nand is not in stable repo yet… you can dig a bit a look at the image builder… pretty easy to use for custom needs… no need to compile from source.
Thanks for this! This worked!
For reference, here’s what I added to /etc/config/network to get it working.
option dns '8.8.8.8'
option gateway '192.168.1.254'
Newbie coming in here… what would I gain or lose by going to vanilla OpenWRT?
You gain skills.
You loss wifi and the UI by default. You need to connect the the LAN port and install all packages including turning on the wifi.
gl.inet UI is great for openwrt beginners and for what is thought for: travelers. vanilla is more of a pro-user, you should know what you are doing thing 
as @alzhao stated vanilla doesn’t have wifi on by default, and in gl-750s case you should install a snapshot release that also has no gui at all at first install.
Nothing to make friends, even uploading the NAND file “openwrt-ath79-nand-glinet_gl-ar750s-nor-nand-squashfs-factory.img” the AR750S router goes to BRICK. The WIFI LEDs after the flashig remain off and it is not possible to access the 192.168.8.1 interface.
to be able to load this firmware: “openwrt-ath79-nand-glinet_gl-ar750s-nor-nand-squashfs-factory.img” is it necessary that another firmware is already installed before?
What am I doing wrong I don’t understand?
WIfi is probably switched off by defailt (as indicated earlier in this very thread). 192.168.8.1 is the default IP address for gl.inet firmware only. OpenWRT uses 192.168.1.1.
Start here:
I received the same error and followed the hard reset insteuctions and it loaded great
Once you ha
Ve you lan set for the static ip addreas use a different browser. I used edge
wow a newbie layman walk by, before buying a 750s. (got a mango for pilot testing)
embedded + linux is really hard to use.
i’ll buy a device from GL inet, rather than buy a cheap Chinese 2nd hand router and flash myself.
This is overwhelming to non-engineers!
Hope it is still smooth after Slate’s 3yr support period…
thx