Samsung Electronics Co. Ltd. - Modem - 2.19.1.0 Download May 2026

Unlike previous modem drivers that allowed seamless roaming between band aggregations, 2.19.1.0 appears to enforce a strict regional carrier profile lock. Users in the EU (using SM-S901B) report that manually flashing this driver disables ENDC (E-UTRAN New Radio – Dual Connectivity) on non-EU SIM cards. In plain English: your 5G drops to LTE the moment you cross a border.

XDA Developers forum members discovered that dialing *#2263# (the standard Samsung band selection menu) after installing 2.19.1.0 triggers an undocumented "Engineer Log" dump to /dev/log/modem. The dump includes a string referencing an internal project: "Project Moonshot - L1 Slicing." This suggests Samsung is testing network slicing—a 5G feature that reserves bandwidth for specific apps—but has not publicly announced it for these legacy chipsets. samsung electronics co. ltd. - modem - 2.19.1.0 download

Microsoft hosts certified drivers from Samsung directly. Unlike previous modem drivers that allowed seamless roaming

The installation steps can vary depending on the operating system and the specific driver. Generally: XDA Developers forum members discovered that dialing *#2263#

Cause: Conflicting legacy drivers or corrupted driver store.

Solution:

In controlled tests by AnandTech forum users, driver 2.19.1.0 reduces ping jitter by 23% on sub-6GHz 5G networks. However, it increases idle power draw from the Shannon 5300 modem by 11%. Samsung’s own release notes omit this entirely, likely to avoid consumer backlash.