Flasher Portable PLUS
The battery-powered handheld service programmer

The Flasher Portable PLUS is a handheld, battery-driven, standalone flash programmer, designed to meet the need for an extremely portable, production-grade flash programmer for in-field firmware updates.

Screenshot of Flasher Deployer, listing four programming projects, blue Flasher Portable PLUS programmer

Overview

Flasher Portable PLUS is a rugged handheld programmer for updating microcontroller firmware. It is optimized for in-field use in harsh environments, supports both on-chip and external flash memory, and works with a variety of target interfaces (including JTAG, SWD, FINE, and SPD). It is highly portable and operates without an external power supply, making it ideal for situations where traditional programming methods aren’t feasible.

With a long-lasting battery, ample storage for multiple configurations, and an intuitive interface, Flasher Portable PLUS ensures that firmware updates are efficient, secure, and hassle-free. It also offers multi-platform support, with setup and control software for Linux, macOS, and Windows.

Key features

Packed with advanced functions, Flasher Portable PLUS provides technicians with the flexibility to perform firmware updates on the go. Product highlights include long battery life for extended use in the field, support for a variety of CPU cores and interfaces, and an intuitive push-button interface that makes managing multiple configurations straightforward.

Battery-powered operation

Flasher Portable PLUS runs on a rechargeable lithium-ion battery that ensures up to 10 hours of continuous use. In other words, it is perfect for field applications in which reliance on an external power supply is out of the question.

Up to 99 firmware images

With 128 MB of internal memory, Flasher Portable PLUS can store as many as 99 firmware images, allowing technicians to easily manage multiple versions or configurations on a single device.

Flasher Portable PLUS symbolizing the key feature user interface within a blue bubble

Intuitive user display

An intuitive GUI on the 1.8" screen ensures easy access to firmware information, provides direct feedback, and conveys important details about project selection, programming progress, and status.

Use cases

With the flexibility required to tackle a variety of firmware-update scenarios, Flasher Portable PLUS meets the needs of technicians in the field. Whether the job is servicing remote devices or working out custom solutions for in-field branding and security, Flasher Portable Plus is a reliable tool for highly diverse applications.

Field-service programming for non-networked devices

Flasher Portable PLUS is ideal for servicing devices that cannot be easily connected to a network, such as wind turbines, remote equipment, or other industrial machinery located in hard-to-reach places. In the event of a firmware issue, a technician can quickly apply patches without a PC or access to a power supply.

These capabilities are particularly useful for devices with inaccessible bootloaders or for situations in which network updates are impractical or impossible. Flasher Portable PLUS is lightweight, portable, and durable. In short: It is an essential tool for field technicians working under challenging conditions.

Exclusive, secure flashing for in-field services

Flasher Portable PLUS is highly beneficial for companies that want to maintain control over firmware updates while reinforcing their corporate identity. Service technicians can carry a customized version of the device, branded with company logos, colors, and slogans. This not only ensures a professional, cohesive image but also enhances trust with customers.

Additionally, Flasher Portable PLUS supports Authorized Flashing, which limits the number of permissible programming cycles per device, providing added security to protect intellectual property in the event of device loss or unauthorized access.

Latest news

2025

May07

Flasher

A new generation of SEGGER's Flasher ATE (automated test equipment) in-circuit gang programmer has arrived: Flasher ATE2. The device uses a space-saving form factor, and it can be mounted to racks or directly to an ATE apparatus.

[Read more...]

All news

How Flasher Portable PLUS works

Flasher Portable PLUS connects to a variety of target devices through a 20-pin interface, with adapters available for different connectors. Once connected, it programs the target microcontroller’s flash memory, either through JTAG, SWD, FINE, or SPD interfaces, depending on the target. With an extensive library of supported CPU cores, including ARM, Cortex, PowerPC, and Renesas RX, it is capable of handling a wide range of devices.

Programming speeds can range from 30 KB/s to 1 MB/s, depending on the target hardware; and, for even faster updates, Flasher Portable PLUS supports simultaneous downloading and programming in turbo mode. As a standalone unit that does not require a computer or external power supply, Flasher Portable PLUS is particularly suited to in-field scenarios. The large amount of internal storage and the user friendly LCD interface make it easy to control and monitor the firmware update process, ensuring technicians can carry out their tasks quickly and accurately.

Customizability

Flasher Portable PLUS can be fully customized to accomodate company branding. When working in the field, service technicians are often an organization's metaphorical face, meaning that company tools, clothing, etc., should ideally communicate an organization's commitment to quality, reliability, and customer service. That is why SEGGER offers several customization options, including:

Injection molding in company colors
Fascia branding with corporate logos and slogans
Customized splash-screen content
Other corporate design elements

All customization work is handled by SEGGER, meaning the customer needs only to choose from the available options. Additionally, volume pricing is available, making it possible to equip hundreds or even thousands of service technicians with a branded, high-quality tool at a competitive price.

Supported devices

The list of supported manufacturers, families, devices, and SoCs includes tens of thousands of devices in hundreds of device families.

Device not listed? Please don’t hesitate to contact us.

Software

Flasher Portable PLUS comes with SEGGER's Flasher Software and Documentation Package for Windows, Linux, and macOS. It provides the tools and resources necessary for configuring, managing, and using Flasher Portable PLUS effectively. It also includes flash loaders for all supported devices, including a wide range of target microcontrollers. The list of supported manufacturers, families and devices, and SoCs provides a detailed overview.

The software package can be downloaded free of charge, and it includes future software and firmware updates, as well as all new flash loaders for target devices added in the future.

Support

Flasher Portable PLUS comes with one year (12 months) of Basic Support. Beyond that, SEGGER's Extended Coverage gives users the option to extend the hardware warranty and Basic Support for one additional year (12 months) or two additional years (24 months). These options are only available at the time of purchase, either through the Web Shop or upon request; adding coverage at a later date is not possible.

Technical specifications

Specifications
Power supply	Via internal lithium-ion rechargeable battery (Sony US14500VR, Panasonic/Sanyo UR14500AC) or USB
Screen display	1,8'' 128x160 px RGB TFT LED backlight
Charging via USB	70 minutes (at 1 A charging current)
USB host interface	USB 2.0 (High-Speed), USB Type B
Target interface	Male 20-pin IDC keyed box header with 0.1" pitch (2.54mm), optional adapters available
Max. target cable length	Recommended (delivered): 20 cm (8") Max. 2 m (6.5") allowed but might reduce max. target interface speed.
Serial transfer rate between Flasher Portable PLUS and target	Up to 50 MHz
Supported target voltage	1.2 - 5 V
Current drawn from target voltage sense pin (VT_Ref)	< 25 µA
Target supply voltage	4.5 V max. (depends on current battery voltage)
Target supply current	Max. 400 mA
Reset type	Open drain with 100 Ohms series resistor. Can be pulled low or tristated
Operating temperature	+ 5 °C ... + 60 °C (Normal operation) + 5 °C ... + 45 °C (Battery charging)
Storage temperature	- 20 °C ... + 45 °C
Relative humidity (non-condensing)	< 90 % rH
Size (without cables)	126 mm x 70 mm x 28 mm
Weight (without cables)	140 g
Supported OS	Microsoft Windows (x64/Arm), Linux (x64/Arm), macOS (x64/Apple Silicon)