install http server

to install apache on archlinux:

sudo pacman -S apache --noconfirm

document root location on archlinux:

/src/http

to install apache on almalinux/rocky/rhel:

sudo dnf -y install httpd

document root location on almalinux/rocky/rhel:

/var/www/html

to install apache on debian/ubuntu:

sudo apt -y install apache2

to install apache on ubuntu/debian:

/var/www/html

grp261x phones

devices on firmware 1.0.9.x or below cannot upgrade to firmware 1.0.11.9+ directly through web, we need to upgrade via HTTP.

download latest firmware to http document root:

cd /src/http
mkdir -p grandstream/grp261x && cd grandstream/grp261x
wget https://firmware.grandstream.com/Release_GRP261x_1.0.11.18.zip

uncompress zip file:

unzip Release_GRP261x_1.0.11.18.zip
mv Release_GRP261x_1.0.11.18 1.0.11.18

verify md5sum:

md5sum 1.0.11.18/grp2610fw.bin

it should be the following:

f14d0dbbaa92d29298ed08eb88424c7e  1.0.11.18/grp2610fw.bin

now access phone web interface:

maintenance/upgrade/firmware

edit upgrade via network / firmware server path / add your apache server url:

http://192.168.77.101/grandstream/grp261x/1.0.11.18

then apply and save settings:

new message will popup on your phone "new firmware available do you want to upgrade"

devices on firmware 1.0.39.4 or below cannot upgrade to firmware 1.0.55.5 directly through web, we need to upgrade via HTTP.