Echo Dot 2nd Gen (2016) (AEOBC) Firmware History

Device firmware summary

FTVDB catalogs 43 public firmware records for Echo Dot 2nd Gen (2016). The device is identified by model AEOBC and by firmware package com.amazon.biscuit.android.os. These identifiers help distinguish hardware that may have similar retail names but receives a different firmware line.

The catalog currently spans Sep 20, 2018 through Sep 29, 2026. The latest version in the ordered list is Fire OS 6574.1 (NS65741/8149), with build code 13222532484 and a recorded date of Sep 29, 2026.

Compare the version label, numeric build code, and recorded date in the table below. Recorded dates describe the public source metadata in this catalog and are not an installation recommendation or a guarantee that an update applies to every device.

Version	Code	Uploaded	Actions
Fire OS 6574.1 (NS65741/8149)	13222532484	2026-09-29	View record
Fire OS 6574.1 (NS65741/8146)	13222531716	2026-09-17	View record
Fire OS 6574.1 (NS65741/8142)	13222530692	2026-09-09	View record
Fire OS 6574.1 (NS65741/8138)	13222529668	2026-08-31	View record
Fire OS 6.5.7.4 (NS6574/7623)	13121734532	2026-08-03	View record
Fire OS 6.5.7.3 (NS6573/7595)	13054618500	2026-07-03	View record
Fire OS 6.5.7.3 (NS6573/7577)	12920396164	2026-06-12	View record
Fire OS 6.5.7.3 (NS6573/6562)	12853027460	2026-05-22	View record
Fire OS 6.5.7.2 (NS6572/6448)	12718780548	2026-04-11	View record
Fire OS 6.5.7.1 (NS6571/6220)	12584504452	2026-01-17	View record
Fire OS 6.5.7.1 (NS6571/6208)	12584501380	2025-11-28	View record
Fire OS 6.5.7.1 (NS6571/6199)	12584499076	2025-11-08	View record
Fire OS 6.5.7.1 (NS6571/6193)	12584497540	2025-10-26	View record
Fire OS 6.5.7.1 (NS6571/6176)	12584493188	2025-10-09	View record
Fire OS 6.5.7.0 (NS6570/6086)	12383143556	2025-09-23	View record
Fire OS 6.5.7.0 (NS6570/6077)	12383141252	2025-09-06	View record
Fire OS 6.5.6.9 (NS6569/6009)	11980470660	2025-07-24	View record
Fire OS 6.5.6.6 (NS6566/6813)	11779349892	2025-05-15	View record
Fire OS 6.5.6.5 (NS6565/5555)	11040830340	2024-11-20	View record
Fire OS 6.5.6.5 (NS6565/5531)	11040824196	2024-09-26	View record
Fire OS 6.5.6.4 (NS6564/5403)	10705247108	2024-07-21	View record
Fire OS 6.5.6.3 (NS6563/5295)	10369675140	2024-06-15	View record
Fire OS 6.5.6.2 (NS6562/5160)	10101205124	2024-04-26	View record
Fire OS 6.5.6.1 (NS6561/4936)	9698494596	2023-11-09	View record
Fire OS 6.5.6.1 (NS6561/4929)	9698492804	2023-10-23	View record
Fire OS 6.5.6.0 (NS6560/4781)	9295801732	2023-09-27	View record
Fire OS 6.5.6.0 (NS6560/4779)	9295801220	2023-08-18	View record
Fire OS 6.5.6.0 (NS6560/4774)	9295799940	2023-08-04	View record
Fire OS 6.5.5.9 (NS6559/4660)	9094444164	2023-06-30	View record
Fire OS 6.5.5.9 (NS6559/4657)	9094443396	2023-06-12	View record
Fire OS 6.5.5.8 (NS6558/4521)	8624646532	2023-03-09	View record
Fire OS 6.5.5.6 (NS6556/4405)	8289072516	2023-01-21	View record
Fire OS 6.5.5.5 (NS6555/4315)	8087722874	2023-11-20	View record
Fire OS 6.5.5.5 (NS6555/4313)	8087722362	2023-01-10	View record
Fire OS 6.5.5.5 (NS6555/4310)	8087721594	2022-11-23	View record
Fire OS 6.5.0.5 (NS6505/5041)	8960323972	2023-04-06	View record
Fire OS 6.4.6.6 (NS6466/6302)	11712110212	2025-04-13	View record
Fire OS 5.5.5.4 (680767620)	680767620	2022-11-18	View record
Fire OS 5.5.5.0 (673726720)	673726720	2021-12-14	View record
Fire OS 5.5.4.9 (672720020)	672720020	2021-10-27	View record
Fire OS 5.5.4.6 (666694320)	666694320	2021-06-23	View record
Fire OS 5.5.3.1 (641575220)	641575220	2019-07-22	View record
Fire OS 5.5.0.3 (564196920)	564196920	2018-09-20	View record

Version

Code

Uploaded

Actions

Fire OS 6574.1 (NS65741/8149)

13222532484

2026-09-29