Latest Samsung Galaxy S21 Ultra (SM-G998U) - ATT firmware

Model		Date	PDA	Version
SM-G998U	USA (AT&T)	2025-09-24	G998USQSHHYI1	15
SM-G998U	USA (AT&T)	2025-06-25	G998USQSGHYF2	15
SM-G998U	USA (AT&T)	2025-05-12	G998USQUEHYDA	15
SM-G998U	USA (AT&T)	2025-02-24	G998USQSEGYA5	14
SM-G998U	USA (AT&T)	2023-12-12	G998USQU9FWKC	14
SM-G998U	USA (AT&T)	2023-08-16	G998USQS8EWH1	13

Model	Country/Carrier
SM-G998U	USA (AT&T)
Date	PDA
2025-09-24	G998USQSHHYI1
Version
15

Model	Country/Carrier
SM-G998U	USA (AT&T)
Date	PDA
2025-06-25	G998USQSGHYF2
Version
15

Model	Country/Carrier
SM-G998U	USA (AT&T)
Date	PDA
2025-05-12	G998USQUEHYDA
Version
15

Model	Country/Carrier
SM-G998U	USA (AT&T)
Date	PDA
2025-02-24	G998USQSEGYA5
Version
14

Model	Country/Carrier
SM-G998U	USA (AT&T)
Date	PDA
2023-12-12	G998USQU9FWKC
Version
14

Model	Country/Carrier
SM-G998U	USA (AT&T)
Date	PDA
2023-08-16	G998USQS8EWH1
Version
13