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 grandstream && cd grandstream
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 then edit:

maintenance/upgrade/firmware

then add your computer url to apache server in my case is the following:

http://192.168.77.101/grandstream/grp261x/1.0.11.18

then apply and save settings on your ip phone:

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