Download sequence
Manage session, security, routine, download, transfer, and reset steps.
Back to / Development Tools
Automotive Engineering Tool
KITE Reflasher
Released Version 0.2.1
A UDS-on-CAN reflashing tool for ECU firmware download and update validation, covering download sequences, Security Access, firmware formats, and trace retention.
Actual KITE Reflasher product screen
Overview
Turn ECU reflashing into a controlled download workflow
KITE Reflasher supports ECU firmware programming, bootloader bring-up, download sequence validation, and pre-delivery update tests. Engineers can configure diagnostic sessions, Security Access, RoutineControl, RequestDownload, TransferData, and ECU Reset steps while keeping firmware artifacts, settings, logs, and traces for analysis.
ID · ki-reflasher
Actual CAN / ISO-TP Setup Screen
KITE Reflasher
Firmware formats
Process HEX, S-record, BIN, and VBF firmware inputs and prepare download segments.
Traceable update
Preserve ASC traces, step states, failure reasons, and merged firmware details.
Bootloader bring-up
Useful for early bootloader validation and ECU update flow debugging.
Product Highlights
Supports Intel HEX, S-record, BIN, and VBF, including VBF headers, data blocks, and erase regions.
Uses a sequencer for 0x10, 0x27, 0x31, 0x34, 0x36, 0x37, 0x11, delay, and download steps.
Merges file blocks by Memory Settings, pads gaps with 0xFF, and exports merged HEX artifacts.
Supports routine erase, per-block CRC, final CRC commands, sector-info tables, and ASC trace retention.
Core Capabilities
UDS / ISO-TP flashing services
Runs diagnostic sessions, Security Access, RoutineControl, RequestDownload, TransferData, RequestTransferExit, and ECUReset over ISO-TP on CAN.
Multi-format firmware loading
Loads Intel HEX, S-record, BIN, and VBF files, resolving addresses, payloads, VBF headers, data blocks, and erase regions into download blocks.
Sequencer and project persistence
Stores hardware settings, target / variant, functional / physical CAN IDs, memory sectors, and `.udss` sequence steps in a project workspace.
Memory-sector merge
Uses Memory Settings to merge file blocks inside the same sector, pads gaps with 0xFF, and writes disambiguated merged HEX files per download step.
Erase / CRC / sector info
Supports routine erase, per-block CRC, final CRC commands, and KCU Gen1-style sector-info table write / verify flows.
Traceable flashing record
Keeps step status, CAN traffic, ASC logs, merged HEX artifacts, failure reasons, and final state for bring-up, analysis, and delivery evidence.
Typical Firmware Update Workflow
From firmware loading and download configuration to step execution and trace retention, ECU update behavior can be validated repeatedly.
1
Load firmware
Import HEX, S-record, BIN, or VBF and verify addresses and segments.
2
Configure sequence
Set session, security, routine, download, and transfer parameters.
3
Run download
Execute each step and record responses, NRCs, progress, and errors.
4
Keep evidence
Export traces, logs, and firmware handling results for debug or review.
Where It Fits
Useful for bootloader validation, update flow development, firmware delivery testing, and field issue analysis.
Bootloader bring-up
Validate session switching, security, routine, and transfer behavior.
Update validation
Repeat the same sequence across firmware versions and compare results.
Failure analysis
Use NRC, trace, and step logs to analyze download interruption or ECU reset issues.
Supported Formats & Standards
ISO 14229 UDS ISO 15765-2 ISO-TP Intel HEX S-record BIN VBF ASC trace CRC32 UDSS sequence Security DLL