4G-AC86U Modem
Gone quiet reasonably evidenced
no firmware for long enough to stand out against its own record
1237 days since the last release against a median gap of 362 (3.4x)
- Last firmware
- 11 May 2023 (3 years ago)
- Releases seen
- 3
- Update rhythm
- about every 12 months
- Support observed
- ≥2 years
- Vendor's promise
- no support period we can evaluate
- Patch latency
- not measurable — its changelogs name no CVE ids
Firmware history
-
A21_02_001 11 May 2023
Release notes — disclosure 0.35
Fixed disconnection issue from incomplete packet error of base station side on several ISP and made 4G-AC86U more resilient.Please unzip the file and refer to the section 4.7.3 Firmware upgrade in the user manual to upgrade the modem firmware.
Archived page, fetched 29 September 2026
-
A18 23 May 2022
Release notes — disclosure 0.33
Please unzip the file and refer to the section 4.7.3 Firmware ugprade in the user manual to upgrade the modem firmware.
Archived page, fetched 29 September 2026
-
A21-004 17 May 2021
Release notes — disclosure 0.35
- Fixed AT command condifure errors - Support Carry Aggregation information - Fixed SMS message errors - Fixed SPN alphabet errorsPlease unzip the file and refer to the section 4.7.3 Firmware ugprade in the user manual to upgrade the modem firmware.
Archived page, fetched 29 September 2026
Evidence
One archived page sits behind this record, the earliest read on 2 August 2026. Everything above was read from it, and each is kept byte for byte so it can be checked after the vendor edits the original.
Identifiers: marketing_name 4G-AC86U Modem
Judged by lifecycle-1 on 29 September 2026.
How these verdicts are computed.