Product upgrade and secondary development

Re-design Services

Upgrading Electronics to Extend Product Value

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This is one of our most distinctive core services. When your product needs new features, improved performance, or an extended lifecycle, we provide professional electronic system (PCB / PCBA) and embedded software upgrade solutions.

With over 10 years of engineering experience, we work closely with your mechanical design team to efficiently complete secondary development of the core electronics—helping you rebuild market competitiveness with minimal risk and the fastest possible timeline.

We specialize in upgrading the “brain” and “nervous system” of your product. In most functional upgrades, the real innovation lies in electronics and control logic, not a complete mechanical redesign.

Rather than reworking your entire enclosure or structure, we act as your trusted electronics R&D partner. We take the time to understand your existing product architecture and upgrade objectives, then deliver a one-stop electronic solution—from circuit design and PCB revision to PCBA manufacturing and embedded software development—ensuring new features integrate seamlessly into your existing product framework.

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Electronics System Upgrade Specialists Focused on Core Function Evolution

Focus on the Electronic Core

Upgrade resources are precisely allocated to PCB hardware and embedded software—the components that define product intelligence and functionality.

Seamless Collaboration

Deep familiarity with electro-mechanical interfaces allows us to work efficiently with your mechanical team, ensuring the upgraded PCBA fits perfectly within the existing enclosure and internal structure.

Experience-Driven Efficiency

Over a decade of project experience enables us to identify critical upgrade paths quickly, avoid common pitfalls, and significantly shorten development cycles.

Our key principles:

We provide full-cycle services covering every stage of electronic system upgrades.

Integrated PCB Hardware & Embedded Software Upgrades

1. PCB Redesign & PCBA Upgrade

Circuit Analysis & Optimization

Review and optimize existing schematics, including power, signal, and interface circuits, to support new functionality.

PCB Revision & Layout Update

Re-layout and re-route the PCB within existing board outlines and mechanical constraints, integrating new components and modules.

Component Selection & Replacement

Recommend and validate key components for new features, or identify optimal alternatives for obsolete or end-of-life parts.

High-Speed & High-Density Design

Address challenges introduced by processor upgrades and faster interfaces (e.g., USB 3.0, MIPI).

From Design to Production

Deliver upgraded PCBA prototypes and provide support for volume manufacturing.

2. Embedded Software Secondary Development

Low-Level Driver Development

Develop stable drivers for newly added sensors, communication modules (4G/5G, Bluetooth, Wi-Fi), displays, and peripherals.

Feature Logic Implementation

Develop application firmware and algorithms to enable new product capabilities.

System Integration & Optimization

Seamlessly integrate new software features with the existing system, optimizing performance and stability.

Connectivity & Smart Enablement

Enable device connectivity, cloud platform integration, mobile app control, and OTA remote firmware updates.

3. Electronic System Integration & Debugging

Collaborative Validation

Work closely with your team to verify functionality, performance, and reliability of the upgraded PCBA at the system level.

Complete Technical Deliverables

Provide full documentation, including updated schematics, PCB files, software source code, and technical documentation.

How We Work With You

Requirement Alignment

You define the upgrade objectives and provide existing mechanical data, schematics, and software overview.

Feasibility Assessment

We analyze feasibility from an electronics and software perspective and provide a clear implementation plan, timeline, and budget.

Parallel Development

While you handle necessary mechanical adaptations, we execute electronics and software upgrades in parallel.

Joint Testing & Validation

Both teams collaborate to complete hardware–software integration testing and full product validation.

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Company

Founded : 2013

Specialties:

Electronics Manufacturing Svcs, Assembly, PCB, PCBA, Prototypes, Electrical Testing, Design& Re-Design, Design for Manufacturability (DFM), Design for Testability (DFT), Conformal Coating, Flex Assembly, Box Build Assembly

Capabilities

Electronics design

Electronics reverse engineering

PCB/PCBA Re-design

Custom cable

Custom Membrane key panel

Prototype PCB Assembly

Turnkey PCB Assembly

Rigid,AL,CU,Ceramic PCB

Flex and Rigid-Flex PCBs

About

About us

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Contact us

No. 8210, Bao'an Avenue, Bao'an District, Shenzhen, China.

ivyzhang@sunlightpcb.com

(0755) 32901353/+8615220091740