diff --git a/Makefile b/Makefile
index 98b27c7..d3bc5d5 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
-# Autogenerated at 01.02.2023 22:27 using ./gen-makefile
+# Autogenerated at 12.04.2023 19:04 using ./gen-makefile
 .DEFAULT_GOAL := help
 
 #===============================================
@@ -57,11 +57,15 @@ golang:
 grubc:
 	@./install/grubc
 
+##jbmono: Install JetBrains Mono fonts
+jbmono:
+	@./install/jbmono
+
 ##kde-appmenu: Install KDE Window AppMenu Applet
 kde-appmenu:
 	@./install/kde-appmenu
 
-##kde-backports: Install KDE Backports + ppa
+##kde-backports: Install KDE Backports
 kde-backports:
 	@./install/kde-backports
 
@@ -169,6 +173,10 @@ syncthing:
 telebit:
 	@./install/telebit
 
+##telegram: Install telegram (latest)
+telegram:
+	@./install/telegram
+
 ##ulauncher: Install ulauncher (latest) + ppa
 ulauncher:
 	@./install/ulauncher
@@ -181,7 +189,7 @@ vivaldi:
 wine:
 	@./install/wine
 
-##youtube-dl: Install youtube-dl
+##youtube-dl: Install youtube-dl (src)
 youtube-dl:
 	@./install/youtube-dl
 
@@ -202,7 +210,7 @@ zsh:
 #	Scripts listed in ./packs
 #===============================================
 
-##flameshot: [TODO] qt5 + flameshot from source
+##flameshot: [TODO] [PACK] qt5 + flameshot from source
 flameshot: qt5 flameshot-build
 
 ##lamp: [PACK] Apache + php + mariadb
@@ -226,7 +234,7 @@ phpstack: php phptools
 #	Scripts listed in ./upgrade
 #===============================================
 
-# Upgrade omz
+##^omz: Upgrade omz
 ^omz:
 	@./upgrade/omz
 
@@ -234,19 +242,19 @@ phpstack: php phptools
 #	Scripts listed in ./uninstall
 #===============================================
 
-# Uninstall docker + ppa
+##/docker: Uninstall docker + ppa
 /docker:
 	@./uninstall/docker
 
-# Uninstall lite-xl
+##/lite-xl: Uninstall lite-xl
 /lite-xl:
 	@./uninstall/lite-xl
 
-# Uninstall omz
+##/omz: Uninstall omz
 /omz:
 	@./uninstall/omz
 
-# Uninstall vivaldi + ppa
+##/vivaldi: Uninstall vivaldi + ppa
 /vivaldi:
 	@./uninstall/vivaldi
 
@@ -271,8 +279,4 @@ help: Makefile
 	@echo "\nAvailable GOALs:"
 	@sed -n 's/^##//p' $< | column -ts ':' | sed -e "s/^/\t/"
 +%:
-	@
-^%:
-	@./upgrade/
-@%:
-	@./uninstall/
+	@make 
diff --git a/gen-makefile b/gen-makefile
index 6e616db..725ce40 100755
--- a/gen-makefile
+++ b/gen-makefile
@@ -47,7 +47,7 @@ for file in ./upgrade/*; do
     name=${name%.sh}
     desc=$(grep -m 1 -oP "(?<=^##makedesc:\s).*$" ${file})
     [ -z "$desc" ] && desc='<no description>'
-    echo -e "# ${desc}\n${CHR_UPGRADE}${name}:\n\t@${file}\n" >> Makefile
+    echo -e "##${CHR_UPGRADE}${name}: ${desc}\n${CHR_UPGRADE}${name}:\n\t@${file}\n" >> Makefile
 done;
 
 cat << EOF >> Makefile
@@ -62,7 +62,7 @@ for file in ./uninstall/*; do
     name=${name%.sh}
     desc=$(grep -m 1 -oP "(?<=^##makedesc:\s).*$" ${file})
     [ -z "$desc" ] && desc='<no description>'
-    echo -e "# ${desc}\n${CHR_UNINSTALL}${name}:\n\t@${file}\n" >> Makefile
+    echo -e "##${CHR_UNINSTALL}${name}: ${desc}\n${CHR_UNINSTALL}${name}:\n\t@${file}\n" >> Makefile
 done;
 
 cat << EOF >> Makefile
@@ -87,11 +87,7 @@ help: Makefile
 	@echo "\nAvailable GOALs:"
 	@sed -n 's/^##//p' $< | column -ts ':' | sed -e "s/^/\t/"
 +%:
-	@$(MAKE) $*
-^%:
-	@./upgrade/$*
-@%:
-	@./uninstall/$*
+	@make $*
 EOF
 
 echo "New ./Makefile has been generated!"
diff --git a/helpers b/helpers
new file mode 100644
index 0000000..25c27da
--- /dev/null
+++ b/helpers
@@ -0,0 +1,196 @@
+#!/bin/bash
+
+installed() {
+    command -v "$1" >/dev/null 2>&1
+}
+
+title() {
+    [ "$1" ] && title="$1" || title="$(grep -m 1 -oP "(?<=^##makedesc:\s).*$" ${BASH_SOURCE[1]})"
+    info
+    info "==============================================="
+    info "$title"
+    info "==============================================="
+    info
+}
+
+require() {
+    if ! installed "$1"; then
+        if [ "$2" ]; then
+            die "'$1' must to be installed in your system" 200
+        else
+            info "Installing '$1' because it is required to continue"
+            sudo apt install "$1"
+            [ $? -gt 0 ] && die "installation cancelled" 201
+        fi
+    fi
+}
+
+download() {
+    require wget 1
+    wget "$1" -O "$2"
+}
+
+abspath() {
+    echo $(realpath -q "${1/#\~/$HOME}")
+}
+
+is_writable() {
+    [ -w "$(abspath $1)" ]
+}
+
+is_dir() {
+    [ -d "$(abspath $1)" ]
+}
+
+is_file() {
+    [ -f "$(abspath $1)" ]
+}
+
+is_function() {
+    declare -F "$1" > /dev/null
+}
+
+regex_match() {
+    printf "%s" "$1" | grep -qP "$2"
+}
+
+in_array() {
+	local find=$1
+    shift
+    for e in "$@"; do
+        [[ "$e" == "$find" ]] && return 0
+    done
+    return 1
+}
+
+implode() {
+    local d=${1-}
+    local f=${2-}
+    if shift 2; then
+        printf %s "$f" "${@/#/$d}"
+    fi
+}
+
+IINFO="( i )"
+INOTE="( * )"
+IWARN="( # )"
+IERROR="( ! )"
+IFATAL="( @ )"
+ISUCCESS="( ! )"
+IASK="( ? )"
+IDEBUG="(DBG)"
+IVRB="( + )"
+
+BOLD="\e[1m"
+DIM="\e[2m"
+NOTBOLD="\e[22m" # sometimes \e[21m
+NOTDIM="\e[22m"
+NORMAL="\e[20m"
+RESET="\e[0m"
+
+FRESET="\e[39m"
+FBLACK="\e[30m"
+FWHITE="\e[97m"
+FRED="\e[31m"
+FGREEN="\e[32m"
+FYELLOW="\e[33m"
+FBLUE="\e[34m"
+FLRED="\e[91m"
+FLGREEN="\e[92m"
+FLYELLOW="\e[93m"
+FLBLUE="\e[94m"
+
+BRESET="\e[49m"
+BBLACK="\e[40m"
+BWHITE="\e[107m"
+BRED="\e[41m"
+BGREEN="\e[42m"
+BYELLOW="\e[43m"
+BBLUE="\e[44m"
+BLRED="\e[101m"
+BLGREEN="\e[102m"
+BLYELLOW="\e[103m"
+BLBLUE="\e[104m"
+
+dt() {
+    echo "[$(date +'%H:%M:%S')] "
+}
+
+ask() {
+    IFS= read -rp "$(print ${BOLD}${BBLUE}${FWHITE}${IASK}${BRESET}\ ${BOLD}$1 ): " $2
+}
+
+print() {
+    echo -e "$*${RESET}"
+}
+
+debug() {
+    if [ "$2" ]; then
+        print "${DIM}${BOLD}${RESET}${DIM} ${FUNCNAME[1]:-?}():${BASH_LINENO:-?}\t$1 "
+    else
+        print "${DIM}${BOLD}${RESET}${DIM}$1 "
+    fi
+}
+
+
+verbose() {
+    print "${BOLD}${IVRB}${RESET}${FYELLOW} $1 "
+}
+
+info() {
+    print "${BOLD}${FWHITE}${BLBLUE}${IINFO}${RESET}${FWHITE} $1 "
+}
+
+note() {
+    print "${BOLD}${DIM}${FWHITE}${INOTE}${RESET} $1 "
+}
+
+success() {
+    print "${BOLD}${BGREEN}${FWHITE}${ISUCCESS}${BRESET}$FGREEN $1 "
+}
+
+warn() {
+    print "${BOLD}${BYELLOW}${FBLACK}${IWARN}${BRESET}${FYELLOW} Warning:${RESET} $1 "
+}
+
+error() {
+    print "${BOLD}${BLRED}${FWHITE}${IERROR} Error: ${BRESET}${FLRED} $1 " >&2
+    # print_stacktrace
+}
+
+fatal() {
+    print "${BOLD}${BRED}${FWHITE}${IFATAL} FATAL: $1 " >&2
+    print_stacktrace
+}
+
+die() {
+    error "$1"
+    [ "$2" ] && exit $2 || exit 100
+}
+
+die_fatal() {
+    fatal "$1"
+    [ "$2" ] && exit $2 || exit 100
+}
+
+die_help() {
+    error "$1"
+    [ "$2" ] && is_function "$2".help && $2.help
+    [ "$3" ] && exit $3 || exit 100
+}
+
+print_stacktrace() {
+    STACK=""
+    local i
+    local stack_size=${#FUNCNAME[@]}
+    debug "Callstack:"
+    # for (( i=$stack_size-1; i>=1; i-- )); do
+    for (( i=1; i<$stack_size; i++ )); do
+        local func="${FUNCNAME[$i]}"
+        [ x$func = x ] && func=MAIN
+        local linen="${BASH_LINENO[$(( i - 1 ))]}"
+        local src="${BASH_SOURCE[$i]}"
+        [ x"$src" = x ] && src=non_file_source
+        debug "   at $func $src:$linen"
+    done
+}
diff --git a/install/jbmono b/install/jbmono
new file mode 100755
index 0000000..a98c633
--- /dev/null
+++ b/install/jbmono
@@ -0,0 +1,14 @@
+#!/bin/bash
+##makedesc: Install JetBrains Mono fonts
+[ -f `dirname $0`/../helpers ] && source `dirname $0`/../helpers || exit 255
+
+# https://www.jetbrains.com/lp/mono/#how-to-install
+
+title
+require unzip
+
+mkdir -p "$HOME/install/jbmono" "$HOME/.local/share/fonts/"
+
+download "https://download.jetbrains.com/fonts/JetBrainsMono-2.304.zip" "$HOME/install/jbmono.zip" && \
+    unzip -oj "$HOME/install/jbmono.zip" "fonts/ttf/*.ttf" -d "$HOME/.local/share/fonts/" && \
+    fc-cache -vf "$HOME/.local/share/fonts/"
diff --git a/tools/fix-obs-vcam.sh b/tools/fix-obs-vcam.sh
index 9a23939..ac2d209 100755
--- a/tools/fix-obs-vcam.sh
+++ b/tools/fix-obs-vcam.sh
@@ -1,4 +1,50 @@
 #!/bin/bash
 
+# https://obsproject.com/kb/virtual-camera-troubleshooting
 # https://obsproject.com/forum/threads/how-to-start-virtual-camera-without-sudo-privileges.139783/
-sudo modprobe v4l2loopback video_nr=2 card_label="OBS Virtual Camera"
+# https://blog.csdn.net/qq_43008667/article/details/128041455
+# https://blog.jbrains.ca/permalink/using-obs-studio-as-a-virtual-cam-on-linux
+# https://github.com/obsproject/obs-studio/issues/4808
+
+# v4l2loopback-dkms
+
+# obs_start()
+# {
+#     #This function is intended to prevent blank cameras in OBS upon OBS restart / exit
+#     #1. load/refresh uvcvideo before starting obs
+#     if lsmod | grep -q 'uvcvideo'; then
+#         sudo rmmod uvcvideo
+#     fi
+#     sudo modprobe uvcvideo
+#     #2. since no environment with a keyring to prompt for allowing virtual webcams prior is a must
+#     sudo modprobe v4l2loopback video_nr=10 card_label='OBS Virtual Camera'
+#     sleep 1
+#     sh -c "$obs_cmd --startvirtualcam || sleep 3; sudo rmmod uvcvideo"
+# }
+
+installed () {
+    command -v $1 > /dev/null
+}
+
+installed 'obs' && obs_cmd='obs'
+installed 'obs-studio' && obs_cmd='obs-studio'
+
+# obs executes this command when you start virtual camera
+# sudo modprobe v4l2loopback exclusive_caps=1 card_label="OBS Virtual Camera"
+
+# another version from one of links below
+# sudo modprobe v4l2loopback video_nr=2 devices=1 card_label="OBS Virtual Camera"
+
+sudo modprobe -r v4l2loopback || sudo rmmod v4l2loopback
+if [[ $? == 0 ]]; then
+    sudo modprobe v4l2loopback video_nr=2 devices=1 card_label="OBS Virtual Camera"
+    if [[ $? == 0 ]]; then
+        $obs_cmd --startvirtualcam & disown
+    else
+        echo "Cannot run modprobe. Ensure v4l2loopback-dkms is installed and try again"
+        exit 1
+    fi
+else
+    echo "Cannot remove v4l2loopback device"
+    exit 2
+fi