Instructions to delete a language to Firefly devices

Firefly S80 S Firefly S80 S
Firefly AURII Dream Mini Firefly AURII Dream Mini
Firefly S20 Dual Firefly S20 Dual
Firefly S120 Firefly S120
Firefly S110Q Firefly S110Q
Firefly S100Q Firefly S100Q
Firefly AURII Fame Firefly AURII Fame
Firefly Metal Grand Firefly Metal Grand
Firefly Aurii Passion Firefly Aurii Passion
Firefly Intense Mini Firefly Intense Mini
Firefly Aurii Force Firefly Aurii Force
Firefly Intense Desire Firefly Intense Desire
Firefly GT50 Firefly GT50
Firefly AURII Inspire Firefly AURII Inspire
Firefly AURII Intense Metal 4G Firefly AURII Intense Metal 4G
Firefly Force Plus Firefly Force Plus
Firefly AURII XCITE Firefly AURII XCITE
Firefly AURII Intense XT Firefly AURII Intense XT
Firefly Aurii Virtuoso Firefly Aurii Virtuoso
Firefly AURII Secret XR Firefly AURII Secret XR