diff --git a/instalador-firma-digital.sh b/instalador-firma-digital.sh
new file mode 100644
index 0000000..717a661
--- /dev/null
+++ b/instalador-firma-digital.sh
@@ -0,0 +1,176 @@
+#!/bin/sh
+# TODO:
+# - Alguna manera de buscar el lenguaje del sistema para pasarlo en set_lang
+# - Extraer fichero y automatizar el proceso de instalación descrito en:
+#   https://fran.cr/instalar-firma-digital-costa-rica-gnu-linux-ubuntu-debian/
+
+urlencode() {
+    ENCODEDURL="$(tr -d '\n' | curl -Gs -w %{url_effective} --data-urlencode @- ./ ||: | sed "s/%0[aA]$//;s/^[^?]*?\(.*\)/\1/")"
+    printf '%s' "$ENCODEDURL" | sed 's/^http.*?//g'
+}
+
+get_asp_var() {
+    VARS="$@" ; i=0
+    for VAR in $VARS ; do
+        VAL="$(printf '%s' "$RESPONSE" | grep -o "id=\"$VAR\"\svalue=\".*\"" | cut -d '"' -f 4 | urlencode)"
+        [ "$i" != 0 ] && printf '&'
+        printf '%s=%s' "$VAR" "$VAL"
+        i=+1
+    done
+}
+
+download_iso() {
+    SN="$1"
+    URL="https://soportefirmadigital.com/sfdj/dl.aspx"
+
+    alias curl="curl \
+        -H 'Pragma: no-cache' \
+        -H 'Connection: keep-alive' \
+        -H 'Cache-Control: no-cache' \
+        -H 'Upgrade-Insecure-Requests: 1' \
+        -H 'User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:109.0) Gecko/20100101 Firefox/128.0' \
+        -H 'Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8' \
+        -H 'Accept-Encoding: gzip, deflate, br' \
+        -H 'Accept-Language: es-ES,es;q=0.8,en-US;q=0.5,en;q=0.3' \
+        -H 'Referer: https://www.soportefirmadigital.com/sfdj/dl.aspx?lang=en' \
+        -H 'Content-Type: application/x-www-form-urlencoded' \
+        -H 'Sec-Fetch-Dest: document' \
+        -H 'Sec-Fetch-Mode: navigate' \
+        -H 'Sec-Fetch-Site: same-origin' \
+        -H 'Sec-Fetch-User: ?1' \
+    "
+
+    RESPONSE="$(curl -s --compressed "$URL" -o -)"
+
+    ASP_VARS="$(get_asp_var __VIEWSTATE __VIEWSTATEGENERATOR __EVENTVALIDATION)"
+    RESPONSE="$(curl -Ls --compressed "$URL" \
+        --data-raw "__EVENTTARGET=ctl00%24certContents%24ddlInstaladores" \
+        --data-raw "__EVENTARGUMENT=" \
+        --data-raw "__LASTFOCUS=" \
+        --data-raw "$ASP_VARS" \
+        --data-raw "ctl00%24certContents%24hiddenISO=Windows_rev62.exe" \
+        --data-raw "ctl00%24certContents%24hidden_ISO_URL=-" \
+        --data-raw "ctl00%24certContents%24txtSerialNumber=" \
+        --data-raw "ctl00%24certContents%24ddlInstaladores=$ddlInstaladores" \
+        --data-raw "ctl00%24certContents%24txtDescripcion=$txtDescripcion" \
+        --data-raw "ctl00%24certContents%24chkConfirmo=" \
+        --data-raw "ctl00%24certContents%24hiddenABID=" \
+        -o -)"
+
+    ASP_VARS="$(get_asp_var __VIEWSTATE __VIEWSTATEGENERATOR __EVENTVALIDATION)"
+    RESPONSE="$(curl -H "Set-Cookie: SN=$SN" -s --compressed "$URL" \
+        --cookie "SN=$SN" \
+        --data-raw "__EVENTTARGET=ctl00%24certContents%24LinkButton3" \
+        --data-raw "__EVENTARGUMENT=" \
+        --data-raw "__LASTFOCUS=" \
+        --data-raw "$ASP_VARS" \
+        --data-raw "ctl00%24certContents%24hiddenISO=$hiddenISO" \
+        --data-raw "ctl00%24certContents%24hidden_ISO_URL=-" \
+        --data-raw "ctl00%24certContents%24txtSerialNumber=$SN" \
+        --data-raw "ctl00%24certContents%24ddlInstaladores=$ddlInstaladores" \
+        --data-raw "ctl00%24certContents%24txtDescripcion=$txtDescripcion" \
+        --data-raw "ctl00%24certContents%24chkConfirmo=on" \
+        --data-raw "ctl00%24certContents%24hiddenABID=" \
+        -o -)"
+
+    printf '%s' "$RESPONSE"
+}
+
+set_file() {
+    FILE="$1"
+
+    [ "$FILE" = "ClientesMac_rev34.zip" ] && hiddenISO="ClientesMac_rev34.zip"
+    [ "$FILE" = "ClientesMac_rev34.zip" ] && ddlInstaladores="Usuarios+MAC"
+    [ "$FILE" = "ClientesMac_rev34.zip" ] && txtDescripcion="Drivers%2C+Certificados+y+Librerias+para+macOS%0D%0ASISTEMAS+OPERATIVOS+HOMOLOGADOS%0D%0A%0D%0AmacOSX+10.14+o+superior.%0D%0A%0D%0ASoporte+%C3%BAnicamente+en+m%C3%A1quinas+F%C3%ADsicas.%0D%0AMD5%3Aa0dee949d20b41a11ab6d4cc727d94bb"
+    [ "$FILE" = "ClientesMac_rev34.zip" ] && SIZE=150252
+
+    [ "$FILE" = "ClientesLinux_DEB64_Rev25.zip" ] && hiddenISO="ClientesLinux_DEB64_Rev25.zip"
+    [ "$FILE" = "ClientesLinux_DEB64_Rev25.zip" ] && ddlInstaladores="Usuarios+Linux+%28DEB+64bits%29"
+    [ "$FILE" = "ClientesLinux_DEB64_Rev25.zip" ] && txtDescripcion="Distribuciones+basadas+en+DEB+x64.%0D%0AVersiones+Homologadas%0D%0A-Ubuntu+18.04+LTS+o+superior%28solo+versiones+LTS%29%0D%0A-Debian+10%0D%0A%0D%0ASoporte+%C3%BAnicamente+en+m%C3%A1quinas+F%C3%ADsicas.%0D%0AMD5%3A3a8c11d0273daee7bfc63a17615a8dc9"
+    [ "$FILE" = "ClientesLinux_DEB64_Rev25.zip" ] && SIZE=108200
+
+    [ "$FILE" = "ClientesLinux_CentOS7_Rev6.zip" ] && hiddenISO="ClientesLinux_CentOS7_Rev6.zip"
+    [ "$FILE" = "ClientesLinux_CentOS7_Rev6.zip" ] && ddlInstaladores="Usuarios+Linux+RPM+%28CentOS+7%29"
+    [ "$FILE" = "ClientesLinux_CentOS7_Rev6.zip" ] && txtDescripcion="Distribuciones+basadas+en+RPM.%0D%0AVersiones+Homologadas%0D%0A-CentOS+7.%0D%0A%0D%0ASoporte+%C3%BAnicamente+en+m%C3%A1quinas+F%C3%ADsicas.%0D%0AMD5%3Aeae741aa8bf16e16a349f0e2ad3b7e64"
+    [ "$FILE" = "ClientesLinux_CentOS7_Rev6.zip" ] && SIZE=114344
+
+    [ "$FILE" = "ClientesLinux_RPM64_Rev24.zip" ] && hiddenISO="ClientesLinux_RPM64_Rev24.zip"
+    [ "$FILE" = "ClientesLinux_RPM64_Rev24.zip" ] && ddlInstaladores="Usuarios+Linux+%28RPM+64bits%29"
+    [ "$FILE" = "ClientesLinux_RPM64_Rev24.zip" ] && txtDescripcion="Distribuciones+basadas+en+RPM+x64.%0D%0AVersiones+Homologadas%0D%0A-Fedora+34+o+superior%0D%0A-CentOS+Stream+9+%0D%0A%0D%0ASoporte+%C3%BAnicamente+en+m%C3%A1quinas+F%C3%ADsicas.%0D%0AMD5%3A6180c4708fb183c8f452240a7c8c01d0"
+    [ "$FILE" = "ClientesLinux_RPM64_Rev24.zip" ] && SIZE=114348
+}
+
+set_lang() {
+    # See: /var/lib/AccountsService/users/
+    [ -z "$SLANG" ] && SLANG="es"
+
+    if [ "$SLANG" = "es" ] ; then
+        TITLE="Instalador firma digital"
+
+        PROMPT_WELCOME="Bienvenido al asistente de instalación de certificados para firma digial."
+
+        PROMPT_FILE="Seleccione el fichero que corresponde a su sistema operativo."
+        FILENAME="Archivo"
+        FILEDESC="Sistema"
+
+        PROMPT_SERIAL="Para continuar con la descarga del fichero del Centro de Soporte Firma Digital, por favor, ingrese el número serial que se encuentra al reverso de la tarjeta."
+        PROMPT_ERR_SERIAL="Error al obtener el número serial de la tarjeta, abortando."
+        PROMPT_ERR_DOWNLOAD="Error al descargar el fichero desde Centro de Soporte Firma Digital, abortando."
+
+        PROMPT_DIR_FILE="A continuación, deberá seleccionar la carpeta donde quiere que se descargue y se extraigan los contenidos del fichero seleccionado"
+        PROMPT_ERR_DIR_FILE="Error al seleccionar la carpeta de descarga para el fichero, abortando."
+
+        PROMPT_DOWNLOAD="Descargando el fichero $FILE desde Centro de Soporte Firma Digital..."
+        PROMPT_ERR_DOWN_FILE="Error al descargar el fichero, abortando."
+    fi
+    
+    if [ "$SLANG" = "en" ] ; then
+    fi
+
+    if [ "$SLANG" = "fr" ] ; then
+    fi
+}
+
+# main
+
+set_lang
+
+if [ -e "/bin/zenity" ] ; then
+    # Welcome
+    zenity --title "$TITLE" --text "$PROMPT_WELCOME" --info
+
+    # Select file to be downloaded
+    FILE="$(zenity --title "$TITLE" --text "$PROMPT_FILE" --list \
+        --column "$FILENAME" --column "$FILEDESC" \
+        "ClientesMac_rev34.zip" "macOSX 10.14 o superior" \
+        "ClientesLinux_DEB64_Rev25.zip" "Ubuntu 18.04 LTS o superior, Debian 10" \
+        "ClientesLinux_CentOS7_Rev6.zip" "CentOS 7" \
+        "ClientesLinux_RPM64_Rev24.zip" "Fedora 34 o superior, CentOS Stream 9" \
+        --print-column=1)"
+
+    # Set file to be downloaded
+    set_file "$FILE"
+
+    # Ask for serial number
+    SERIAL="$(zenity --title "$TITLE" --text "$PROMPT_SERIAL" --entry)"
+    [ -z "$SERIAL" ] && zenity --title "$TITLE" --text "$PROMPT_ERR_SERIAL" --error && exit 1
+
+    # Generate tempkey & Define DOWNLOAD_URL
+    TEMPKEY="$(download_iso "$SERIAL" | sed '/tempkey/!d;s/.*tempkey=//g;s/".*$//g')"
+    [ -z "$TEMPKEY" ] && zenity --title "$TITLE" --text "$PROMPT_ERR_DOWNLOAD" --error && exit 1
+    DOWNLOAD_URL="https://soportefirmadigital.com/sfdj/getiso.aspx?tempkey=$TEMPKEY"
+    
+    # Define where to save file
+    zenity --title "$TITLE" --text "$PROMPT_DIR_FILE" --info
+    SAVE_FILE="$(zenity --file-selection --directory)"
+    [ -z "$SAVE_FILE" ] && zenity --title "$TITLE" --text "$PROMPT_ERR_DIR_FILE" --error && exit 1
+    SAVE_FILE="$SAVE_FILE/$FILE"
+
+    # Download file & show progress
+    (while true ; do 
+        DOWN="$(du "$SAVE_FILE" 2>/dev/null | grep -o '^[0-9]*')"
+        r=$(((DOWN*10000)/SIZE))
+        printf '%d\n' ${r%??}
+        sleep 0.5
+    done | zenity --title "$TITLE" --text "$PROMPT_DOWNLOAD" --progress) & curl "$DOWNLOAD_URL" -o "$SAVE_FILE"
+fi
diff --git a/test.sh b/test.sh
deleted file mode 100644
index ab18e6c..0000000
--- a/test.sh
+++ /dev/null
@@ -1,77 +0,0 @@
-#!/bin/sh
-alias curl="curl \
-    -H 'Pragma: no-cache' \
-    -H 'Connection: keep-alive' \
-    -H 'Cache-Control: no-cache' \
-    -H 'Upgrade-Insecure-Requests: 1' \
-    -H 'User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:109.0) Gecko/20100101 Firefox/128.0' \
-    -H 'Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8' \
-    -H 'Accept-Encoding: gzip, deflate, br' \
-    -H 'Accept-Language: es-ES,es;q=0.8,en-US;q=0.5,en;q=0.3' \
-    -H 'Referer: https://www.soportefirmadigital.com/sfdj/dl.aspx?lang=en' \
-    -H 'Content-Type: application/x-www-form-urlencoded' \
-    -H 'Sec-Fetch-Dest: document' \
-    -H 'Sec-Fetch-Mode: navigate' \
-    -H 'Sec-Fetch-Site: same-origin' \
-    -H 'Sec-Fetch-User: ?1' \
-"
-
-urlencode() {
-    ENCODEDURL="$(tr -d '\n' | curl -Gs -w %{url_effective} --data-urlencode @- ./ ||: | sed "s/%0[aA]$//;s/^[^?]*?\(.*\)/\1/")"
-    printf '%s' "$ENCODEDURL" | sed 's/^http.*?//g'
-}
-
-get_asp_var() {
-    VARS="$@" ; i=0
-    for VAR in $VARS ; do
-        VAL="$(printf '%s' "$REQUEST" | grep -o "id=\"$VAR\"\svalue=\".*\"" | cut -d '"' -f 4 | urlencode)"
-        [ "$i" != 0 ] && printf '&'
-        printf '%s=%s' "$VAR" "$VAL"
-        i=+1
-    done
-}
-
-download_iso() {
-    SN="1234"
-    URL="https://soportefirmadigital.com/sfdj/dl.aspx"
-    hiddenISO="ClientesLinux_DEB64_Rev25.zip"
-    ddlInstaladores="Usuarios+Linux+%28DEB+64bits%29"
-    txtDescripcion="Distribuciones+basadas+en+DEB+x64.%0D%0AVersiones+Homologadas%0D%0A-Ubuntu+18.04+LTS+o+superior%28solo+versiones+LTS%29%0D%0A-Debian+10%0D%0A%0D%0ASoporte+%C3%BAnicamente+en+m%C3%A1quinas+F%C3%ADsicas.%0D%0AMD5%3A3a8c11d0273daee7bfc63a17615a8dc9"
-
-    REQUEST="$(curl -s --compressed "$URL" -o -)"
-
-    ASP_VARS="$(get_asp_var __VIEWSTATE __VIEWSTATEGENERATOR __EVENTVALIDATION)"
-    REQUEST="$(curl -Ls --compressed "$URL" \
-        --data-raw "__EVENTTARGET=ctl00%24certContents%24ddlInstaladores" \
-        --data-raw "__EVENTARGUMENT=" \
-        --data-raw "__LASTFOCUS=" \
-        --data-raw "$ASP_VARS" \
-        --data-raw "ctl00%24certContents%24hiddenISO=Windows_rev62.exe" \
-        --data-raw "ctl00%24certContents%24hidden_ISO_URL=-" \
-        --data-raw "ctl00%24certContents%24txtSerialNumber=" \
-        --data-raw "ctl00%24certContents%24ddlInstaladores=$ddlInstaladores" \
-        --data-raw "ctl00%24certContents%24txtDescripcion=$txtDescripcion" \
-        --data-raw "ctl00%24certContents%24chkConfirmo=" \
-        --data-raw "ctl00%24certContents%24hiddenABID=" \
-        -o -)"
-
-    ASP_VARS="$(get_asp_var __VIEWSTATE __VIEWSTATEGENERATOR __EVENTVALIDATION)"
-    REQUEST="$(curl -H "Set-Cookie: SN=$SN" -s --compressed "$URL" \
-        --cookie "SN=$SN" \
-        --data-raw "__EVENTTARGET=ctl00%24certContents%24LinkButton3" \
-        --data-raw "__EVENTARGUMENT=" \
-        --data-raw "__LASTFOCUS=" \
-        --data-raw "$ASP_VARS" \
-        --data-raw "ctl00%24certContents%24hiddenISO=$hiddenISO" \
-        --data-raw "ctl00%24certContents%24hidden_ISO_URL=-" \
-        --data-raw "ctl00%24certContents%24txtSerialNumber=$SN" \
-        --data-raw "ctl00%24certContents%24ddlInstaladores=$ddlInstaladores" \
-        --data-raw "ctl00%24certContents%24txtDescripcion=$txtDescripcion" \
-        --data-raw "ctl00%24certContents%24chkConfirmo=on" \
-        --data-raw "ctl00%24certContents%24hiddenABID=" \
-        -o -)"
-
-    printf '%s' "$REQUEST"
-}
-
-download_iso
diff --git a/works.sh b/works.sh
deleted file mode 100644
index ab18e6c..0000000
--- a/works.sh
+++ /dev/null
@@ -1,77 +0,0 @@
-#!/bin/sh
-alias curl="curl \
-    -H 'Pragma: no-cache' \
-    -H 'Connection: keep-alive' \
-    -H 'Cache-Control: no-cache' \
-    -H 'Upgrade-Insecure-Requests: 1' \
-    -H 'User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:109.0) Gecko/20100101 Firefox/128.0' \
-    -H 'Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8' \
-    -H 'Accept-Encoding: gzip, deflate, br' \
-    -H 'Accept-Language: es-ES,es;q=0.8,en-US;q=0.5,en;q=0.3' \
-    -H 'Referer: https://www.soportefirmadigital.com/sfdj/dl.aspx?lang=en' \
-    -H 'Content-Type: application/x-www-form-urlencoded' \
-    -H 'Sec-Fetch-Dest: document' \
-    -H 'Sec-Fetch-Mode: navigate' \
-    -H 'Sec-Fetch-Site: same-origin' \
-    -H 'Sec-Fetch-User: ?1' \
-"
-
-urlencode() {
-    ENCODEDURL="$(tr -d '\n' | curl -Gs -w %{url_effective} --data-urlencode @- ./ ||: | sed "s/%0[aA]$//;s/^[^?]*?\(.*\)/\1/")"
-    printf '%s' "$ENCODEDURL" | sed 's/^http.*?//g'
-}
-
-get_asp_var() {
-    VARS="$@" ; i=0
-    for VAR in $VARS ; do
-        VAL="$(printf '%s' "$REQUEST" | grep -o "id=\"$VAR\"\svalue=\".*\"" | cut -d '"' -f 4 | urlencode)"
-        [ "$i" != 0 ] && printf '&'
-        printf '%s=%s' "$VAR" "$VAL"
-        i=+1
-    done
-}
-
-download_iso() {
-    SN="1234"
-    URL="https://soportefirmadigital.com/sfdj/dl.aspx"
-    hiddenISO="ClientesLinux_DEB64_Rev25.zip"
-    ddlInstaladores="Usuarios+Linux+%28DEB+64bits%29"
-    txtDescripcion="Distribuciones+basadas+en+DEB+x64.%0D%0AVersiones+Homologadas%0D%0A-Ubuntu+18.04+LTS+o+superior%28solo+versiones+LTS%29%0D%0A-Debian+10%0D%0A%0D%0ASoporte+%C3%BAnicamente+en+m%C3%A1quinas+F%C3%ADsicas.%0D%0AMD5%3A3a8c11d0273daee7bfc63a17615a8dc9"
-
-    REQUEST="$(curl -s --compressed "$URL" -o -)"
-
-    ASP_VARS="$(get_asp_var __VIEWSTATE __VIEWSTATEGENERATOR __EVENTVALIDATION)"
-    REQUEST="$(curl -Ls --compressed "$URL" \
-        --data-raw "__EVENTTARGET=ctl00%24certContents%24ddlInstaladores" \
-        --data-raw "__EVENTARGUMENT=" \
-        --data-raw "__LASTFOCUS=" \
-        --data-raw "$ASP_VARS" \
-        --data-raw "ctl00%24certContents%24hiddenISO=Windows_rev62.exe" \
-        --data-raw "ctl00%24certContents%24hidden_ISO_URL=-" \
-        --data-raw "ctl00%24certContents%24txtSerialNumber=" \
-        --data-raw "ctl00%24certContents%24ddlInstaladores=$ddlInstaladores" \
-        --data-raw "ctl00%24certContents%24txtDescripcion=$txtDescripcion" \
-        --data-raw "ctl00%24certContents%24chkConfirmo=" \
-        --data-raw "ctl00%24certContents%24hiddenABID=" \
-        -o -)"
-
-    ASP_VARS="$(get_asp_var __VIEWSTATE __VIEWSTATEGENERATOR __EVENTVALIDATION)"
-    REQUEST="$(curl -H "Set-Cookie: SN=$SN" -s --compressed "$URL" \
-        --cookie "SN=$SN" \
-        --data-raw "__EVENTTARGET=ctl00%24certContents%24LinkButton3" \
-        --data-raw "__EVENTARGUMENT=" \
-        --data-raw "__LASTFOCUS=" \
-        --data-raw "$ASP_VARS" \
-        --data-raw "ctl00%24certContents%24hiddenISO=$hiddenISO" \
-        --data-raw "ctl00%24certContents%24hidden_ISO_URL=-" \
-        --data-raw "ctl00%24certContents%24txtSerialNumber=$SN" \
-        --data-raw "ctl00%24certContents%24ddlInstaladores=$ddlInstaladores" \
-        --data-raw "ctl00%24certContents%24txtDescripcion=$txtDescripcion" \
-        --data-raw "ctl00%24certContents%24chkConfirmo=on" \
-        --data-raw "ctl00%24certContents%24hiddenABID=" \
-        -o -)"
-
-    printf '%s' "$REQUEST"
-}
-
-download_iso