The firmware's already integrated character set fully supports the following 582 languages from 237 regions:
(FW 9.1.0 initial release containing font release 10-25-2017)
Abaza
Abkhazian
Abron
Achinese
Acoli
Adangme
Adyghe
Afar
Afrikaans
Aghem
Ainu (Latin script)
Akan
Akoose
Alabama
Albanian
Albay Bikol
Aleut
Southern Altai
Amo
Ao Naga
Aragonese
Araona
Arapaho
Arawak
Aromanian
Arpitan
Assyrian Neo-Aramaic (Cyrillic script)
Asturian
Asu
Atikamekw
Atsam
Avaric
Aymara
Azerbaijani (Cyrillic script)
Azerbaijani (Latin script)
Bafia
Bafut
Balinese
Balkan Gagauz Turkish
Baluchi (Latin script)
Bambara (Latin script)
Banjar
Baoulé
Basaa
Bashkir
Basque
Batak Toba
Bavarian
Belarusian
Bemba
Bena
Berber (Latin script)
Betawi
Bikol
Bini
Bislama
Bomu
Bosnian (Cyrillic script)
Bosnian (Latin script)
Brahui (Latin script)
Breton
Bube
Buginese
Buhid
Bulgarian
Bulu
Buriat
Bushi
Caddo
Capiznon
Carib
Catalan
Cayuga
Cebaara Senoufo
Cebuano
Central-Eastern Niger Fulfulde
Chamorro
Chechen
Cheyenne
Chiga
Chimborazo Highland Quichua
Hakka Chinese (Latin script)
Min Nan Chinese (Latin script)
Chinook Jargon
Chipewyan
Choctaw
Chukchi
Church Slavic
Chuukese
Chuvash
Colognian
Comorian (Latin script)
Coptic (Greek script)
Cornish
Corsican
Cree (Latin script)
Creek
Crimean Turkish
Crimean Turkish (Cyrillic script)
Croatian
Czech
Dakota
Dan
Danish
Dargwa
Delaware
Dinka
Dogrib
Duala
Dungan
Central Dusun
Dutch
Middle Dutch
Dyula
Northern East Cree (Latin script)
Southern East Cree (Latin script)
East Futuna
Efik
Ekajuk
Embu
Emilian
English
Jamaican Creole English
Middle English
Old English
Virgin Islands Creole English
Erzya
Esperanto
Estonian
Etruscan (Latin script)
Evenki
Ewe
Ewondo
Extremaduran
Fang
Faroese
Fijian
Filipino
Finnish
West Flemish
Fon
Frafra
Cajun French
French
French-based Creoles
Guianese Creole French
Middle French
Old French
Réunion Creole French
Seselwa Creole French
Eastern Frisian
Northern Frisian
Western Frisian
Friulian
Fulah
Ga
Gagauz
Gagauz (Cyrillic script)
Galician
Ganda
Gayo
Gbaya
German
Low German
Middle High German
Old High German
Palatine German
Pennsylvania German
Swiss German
Gheg Albanian
Ghomala
Gilbertese
Gorontalo
Grebo
Greek
Ancient Greek (Greek script)
Gronings
Guajajára
Guarani
Eastern Gurung (Latin script)
Gusii
Gwichʼin
Haida
Haitian Creole
Hanunoo
Hausa (Latin script)
Hawaiian
Herero
Hiligaynon
Fiji Hindi (Latin script)
Hiri Motu
Hmong
Hmong Njua
Hopi
Hungarian
Hupa
Iban
Ibibio
Icelandic
Igbo
Iloko
Inari Sami
Indonesian
Ingrian
Ingush
Ingush (Latin script)
Interlingua
Inuinnaqtun
Inuktitut (Latin script)
Inupiaq
Irish
Old Irish (Latin script)
Italian
Javanese
Jenaama Bozo
Jju
Jola-Fonyi
Jutish
Kabardian
Kabuverdianu
Kabyle
Kachin
Kaingang
Kako
Kalaallisut
Kalanga
Kalenjin
Kalmyk
Kalo Finnish Romani
Kamba
Kara-Kalpak
Karachay-Balkar
Karelian
Kashubian
Kazakh (Cyrillic script)
Kelengaxo Bozo
Kerinci
Khakas
Khanty
Khasi
Khmu (Latin script)
Kikuyu
Kimbundu
Kinaray-a
Kinyarwanda
Kirmanjki
Kita Maninkakan
Klingon (Latin script)
Kom
Komering
Komi
Komi-Permyak
Kongo
Koro
Koro Wachi
Koryak
Kosraean
Kotava
Koyra Chiini
Koyraboro Senni
Kpelle
Krio
Kuanyama
Kumyk
Kurdish (Cyrillic script)
Kurdish (Latin script)
Kutenai
Kwasio
Kyrgyz (Cyrillic script)
Kyrgyz (Latin script)
Kʼicheʼ
Ladino
Lak
Lakota
Lamba
Lampung Api
Langi
Lango
Latgalian
Latin
Latvian
Laz
Lezghian
Ligurian
Limburgish
Lingala
Lingua Franca Nova
Lingua Franca Nova (Cyrillic script)
Lithuanian
Livonian
Lombard
Lomwe
Lozi
Luba-Katanga
Luba-Lulua
Luiseno
Lule Sami
Lunda
Luo
Lushootseed
Luxembourgish
Luyia
Maasina Fulfulde
Macedonian
Machame
Madurese
Mafa
Maguindanaon
Main-Franconian
Makasar
Makhu
Makhuwa-Meetto
Makonde
Malagasy
Malay (Latin script)
Negeri Sembilan Malay
Maltese
Mandar
Mandingo (Latin script)
Mansi
Manx
Manyika
Maori
Mapuche
Mari
Western Mari
Marshallese
Masaaba
Masai
Central Mazahua
Mbere
Mbunga
Medumba
Mende
Mentawai
Meru
Metaʼ
Mi'kmaq
Minangkabau
Mirandese
Mizo
Mohawk
Moksha
Mongo
Mongolian (Cyrillic script)
Montagnais
Morisyen
Mossi
Mru (Latin script)
Mundang
Muslim Tat
Muslim Tat (Cyrillic script)
Central Huasteca Nahuatl
Eastern Huasteca Nahuatl
Western Huasteca Nahuatl
Nama
Nanai
Naskapi (Latin script)
Nauru
Navajo
Naxi
Ndau
North Ndebele
Ndonga
Neapolitan
Nenets
Ngaju
Ngiemboon
Ngomba
Nheengatu
Nias
Nigerian Fulfulde
Nigerian Pidgin
Niuean
Nogai
Norwegian Bokmål
Norwegian Nynorsk
Novial
Nuer
Nyamwezi
Nyanja
Nyankole
Nyasa Tonga
Nyoro
Nzima
Occitan
Ojibwa
Oromo
Osage
Oscan (Latin script)
Ossetic
Palauan
Pampanga
Pangasinan
Papiamento
Picard
Piedmontese
Plautdietsch
Pohnpeian
Polish
Pontic
Pontic (Cyrillic script)
Pontic (Latin script)
Portuguese
Old Provençal
Prussian
Punu
Pökoot
Quechua
Rapanui
Rarotongan
Rejang
Riang
Riffian (Latin script)
Rinconada Bikol
Romagnol
Romanian
Romanian (Cyrillic script)
Romansh
Romany
Romany (Cyrillic script)
Rombo
Ronga
Rotuman
Roviana
Rundi
Russian
Rusyn
Rwa
Safaliba
Saho
Sakha
Samburu
Northern Sami
Northern Sami (Cyrillic script)
Southern Sami
Samoan
Samogitian
Sandawe
Sangir
Sango
Sangu
Santali
Sardinian
Sasak
Sassarese Sardinian
Saterland Frisian
Scots
Scottish Gaelic
Seki
Selayar
Selkup
Sena
Seneca
Serbian (Cyrillic script)
Serbian (Latin script)
Serer
Seri
Shambala
Shona
Shor
Sichuan Yi (Latin script)
Sicilian
Sidamo
Siksika
Silesian
Lower Silesian
Sinte Romani
Skolt Sami
Slave
North Slavey
Slovak
Slovenian
Soga
Somali
Soninke
Sora (Latin script)
Lower Sorbian
Upper Sorbian
Northern Sotho
Southern Sotho
South Ndebele
Spanish
Sranan Tongo
Sukuma
Sundanese
Susu
Swahili
Swati
Swedish
Tabassaran
Tachelhit (Latin script)
Tae’
Tagbanwa
Tahitian
Taita
Tajik (Cyrillic script)
Tajik (Latin script)
Talysh
Talysh (Cyrillic script)
Tamashek
Central Atlas Tamazight
Taroko
Tasawaq
Tatar
Tausug
Tavringer Romani
Tedim Chin
Tereno
Teso
Tetum
Timne
Tiv
Tlingit
Tok Pisin
Tokelau
Tolaki
Tomo Kan Dogon
Tongan
Tooro
Tornedalen Finnish
Tsakhur
Tsakhur (Cyrillic script)
Tsakonian
Tsimshian
Tsonga
Tswana
Tumbuka
Turkish
Turkmen
Turkmen (Cyrillic script)
Turoyo
Tuvalu
Tuvinian
Tyap
Uab Meto
Udihe
Udmurt
Udmurt (Latin script)
Ukrainian
Ulithian
Umbrian (Latin script)
Umbundu
Uyghur (Cyrillic script)
Uyghur (Latin script)
Uzbek (Cyrillic script)
Uzbek (Latin script)
Vai (Latin script)
Venda
Venetian
Veps
Vietnamese
Volapük
Votic
Vunjo
Võro
Wallisian
Walloon
Walser
Waray
Warlpiri
Washo
Wayuu
Welsh
Wolof
Xaasongaxango
Xavánte
Xhosa
Yangben
Yao
Yapese
Yemba
Yoruba
Yucatec Maya
Central Yupik
Zapotec
Zarma
Zaza
Zeelandic
Zhuang
Zulu
Zuni