First, you must create the new language:
1. Go to Back Office >> Tools >> Languages >> Add new
2. Complete the information and click Save. (Official list of ISO country codes).
Then, you must fill in all translation fields:
1. Go to Back Office >> Tools >> Translations >> Modify Translations section
2. In the drop-down list, select the part of PrestaShop you want to translate (for example, “Front Office translations”)
3. Click the flag corresponding to the language you have created.
4. Fill in all translation fields.
5. Click Update Translations.
6. Repeat steps 2 through 5 for each part of PrestaShop.
Tip: As of PrestaShop v1.0 RC3, you must manually translate the following parts of PrestaShop:
*
Legal & Conditions. Translations of legal mentions and sales
conditions must be made manually by adding text to
../themes/prestashop/mentions.tpl and
../themes/prestashop/conditions.tpl respectively. If legal &
conditions in your language have not been received by PrestaShop,
please send them to us for inclusion in the next version.
*
Installer. Translation of the installer must be made manually by
providing the translations in the ../install/langs/us.php file. After
you have translated the file, please send it to us for inclusion in the
next version.