We're currently in progress of changing the translations system completely. We hope to deliver much more flexible system for both users and translations contributors. And for this reason, the old approach (Translations tool installation) is not being used, we'll be sure to update respective posts here on the forums soon.
If you wish to contribute with your translations, the best place for that is to start translating EPESI on your local installation, through Administrator->Language & Translations. With the next release we'll provide a tool that, only with explicit user consent, will send all custom translations to our server where we'll create a base for translations for next releases. We have a bigger announcement and explanation coming up soon.
Thank you for your support!
I am interested in joining the team of translators (Portuguese) ... What should I do?