Roadmap: Make Spark the best USB flasher — better than Rufus + Etcher combined

[lldlfasjkdas]

Repo

https://github.com/sparkflash-dev/spark

Context

Spark is a fork of balenaEtcher with all telemetry removed. Goal: the best OS image flasher for sysadmins who flash drives every day. Better than Rufus and Etcher combined.

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Problems with Etcher (from 600+ open issues, forums, HN)

• Spyware/telemetry — sends image filenames, hardware IDs to Google Analytics, Mixpanel, Sentry without consent (#2057, #2902). Tails project stopped recommending it.
• Bloated — 450 MB install for a USB writer. USBImager is 300 KB.
• Slow — 3 MB/s on macOS vs 20-30 MB/s with dd (#2740)
• Broken on Apple Silicon — corrupts SD cards on M4 Macs (#4457)
• macOS code signing issues — "will harm your computer" (#4361)
• No advanced options — no MBR/GPT, no partition scheme, no persistence
• No Windows ISO support — #210, 7+ years open
• No backup/clone — #266
• No CLI — GUI-only
• Abandoned — slow response to critical bugs

Problems with Rufus

• Windows-only — Roadmap: Make Spark the best USB flasher — better than Rufus + Etcher combined #1 complaint. No Linux, no macOS.
• No CLI mode — #111, most upvoted feature request
• Complex UI — too many options for simple tasks
• No multi-drive — can't flash multiple USBs at once
• No drag & drop — manual file picker only
• Secure Boot headaches — #2244

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Roadmap

Phase 1: Core (v2.x) — DONE

• Remove ALL telemetry (Sentry, Mixpanel, GA, auto-updater)
• Remove marketing webviews (64% of window was ads)
• Modern dark UI (Inter font, deep navy theme, glow effects)
• Keyboard shortcuts (Ctrl+O, Ctrl+D, Ctrl+Enter, Esc, F5)
• Drag & drop with visual feedback
• Remove rendition dependency (lighter bundle)
• zstd / .zst image support
• Cancel confirmation dialog
• Complete rebrand (logo, colors, bundle ID, app protocol)

Phase 2: Reliability (v3.0) — DONE

• SHA256/MD5 checksum auto-verification from sidecar files
• Human-readable error messages with troubleshooting suggestions
• Fix Ubuntu 24.04 .deb install
• Fix requestMetadata race condition (#4150)
• WebSocket input validation & XSS fixes
• Shell injection prevention in environment variable handling

Phase 3: Power Features (v3.1-3.2) — DONE

• CLI mode — spark flash, spark list, spark verify for scripting/CI
• 15 languages — EN, ZH-CN, ZH-TW, RU, JA, KO, DE, FR, ES, IT, PT, AR, TR, PL, HI, VI
• Windows ISO detection — detect version/edition, recommend MBR/GPT and UEFI/Legacy
• Persistent storage — casper-rw for Ubuntu, overlay for Fedora, persistence for Debian/Kali
• Bad sector scan — optional pre-write surface scan with Quick/Standard/Thorough modes
• Flash queue — sequential multi-image operations with auto-detect
• Flash history — track past operations with stats
• Drive health — fake capacity detection, bus type analysis, mountpoint warnings
• Auto-eject — optionally eject drive after successful flash
• Secure IPC — channel allowlist, sender validation, prototype pollution protection
• Content Security Policy — strict CSP headers
• Electron sandbox — context isolation, navigation locks
• 140+ unit tests — comprehensive coverage

Phase 4: Pro Features (v3.3-3.4) — DONE

• Multi-boot (Ventoy-style) — multiple ISOs on one USB with GRUB boot menu
• Drive backup/clone — raw image backups with gzip/zstd compression
• Queue mode — flash same image to multiple drives sequentially (insert next, auto-flash)
• Image library — bookmark ISOs with tags, search, usage stats
• Post-flash scripts — run custom scripts after flashing (SSH key injection, hostname, WiFi config)
• Plugin system — community extension framework with manifest validation and permissions
• Network flash — flash from HTTP/HTTPS URL with resume support
• Portable mode — run from USB with config stored alongside executable
• Accessibility — ARIA labels, screen reader, high contrast themes, reduced motion, focus trap
• Theme manager — dark/light theme with CSS custom properties
• Shortcut manager — 12 configurable keyboard shortcuts
• Notification manager — native OS notifications with action buttons
• Direct I/O — bypass OS buffer cache for faster writes
• Parallel verification — concurrent segment verification
• Write resume — checkpoint recovery for interrupted writes
• Buffer pool — prevent memory leaks during writes
• Lazy loading — faster startup via deferred module loading
• GitHub Actions CI — lint, test, build + automated telemetry audit
• CLI backup & queue — spark backup and spark queue commands

Phase 5: Polish (v4.0) — NEXT

• Bundle size reduction — tree-shake, lazy load, target < 100 MB
• Native Windows ISO flashing — full MBR/GPT write with UEFI/Legacy boot config
• File system formatting — FAT32, NTFS, ext4, exFAT options
• Silent auto-updates — background update check from GitHub Releases
• Drive-to-drive cloning UI — visual clone workflow
• Image download integration — fetch popular ISOs directly in-app
• Accessibility audit — WCAG 2.1 AA compliance verification
• macOS notarization — proper code signing and notarization pipeline
• Snap / Flatpak / AppImage — Linux packaging for all distros
• Community plugin repository — discover and install plugins from within the app
• Electron 38+ upgrade — latest Chromium and Node.js

Phase 6: Enterprise (v5.0) — Future

• Headless server mode — REST API for remote flash management
• Fleet provisioning — flash hundreds of drives with different configs
• PXE boot integration — network boot alongside USB flash
• LUKS encryption — create encrypted drives during flash
• Secure Boot signing — sign bootloaders for Secure Boot compatibility

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Priority matrix

Impact	Effort	Feature	Status
Done	Done	Remove all telemetry	v2.1.4
Done	Done	Modern dark UI	v3.0.0
Done	Done	Checksum verification	v3.0.0
Done	Done	CLI mode	v3.1.0
Done	Done	15 languages	v3.4.0
Done	Done	Windows ISO support	v3.4.0
Done	Done	Multi-boot	v3.4.0
Done	Done	Drive backup/clone	v3.4.0
Done	Done	Queue mode	v3.4.0
Done	Done	Plugin system	v3.4.0
Done	Done	Persistent storage	v3.4.0
Done	Done	Post-flash scripts	v3.4.0
Done	Done	zstd support	v2.1.4
High	Med	Bundle size reduction	v4.0
High	Med	Native Windows ISO write	v4.0
High	High	macOS notarization	v4.0
Med	Low	Auto-updates	v4.0
Med	Med	Snap/Flatpak/AppImage	v4.0
Med	High	Fleet provisioning	v5.0

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Why Spark wins

1. Privacy-first — zero telemetry, zero tracking, period
2. Cross-platform — Linux + Windows + macOS (Rufus is Windows-only)
3. Modern UX — clean dark UI, 12 keyboard shortcuts, drag & drop
4. Power features — CLI, Windows ISO, multi-boot, persistence, backup, queue, plugins, post-flash scripts
5. Lightweight — removed rendition and marketing, targeting < 100 MB
6. Open & honest — no fake password dialogs, no bundled ads, no upsells
7. Accessible — ARIA labels, high contrast, screen reader, reduced motion
8. Secure — CSP, sandbox, IPC validation, input sanitization, telemetry audit in CI

[lldlfasjkdas]

v3.0.0 Released! 🎉

Release: https://github.com/sparkflash-dev/spark/releases/tag/v3.0.0

Phase 1 (v2.x) — ✅ Complete

All telemetry removed, initial release done.

Phase 2 (v3.0) — Status Update

Feature	Status
Checksum verification (SHA256 auto-detect from .sha256sum)	✅ Done
Better error messages (human-readable tips for every error code)	✅ Done
Modern dark UI (Inter font, deep navy theme, amber/red accents)	✅ Done
Keyboard shortcuts (Ctrl+O, Ctrl+,, Esc)	✅ Done
Expanded settings (7 options in 3 sections)	✅ Done
New Spark logo (lightning bolt gradient)	✅ Done
Complete rebrand (all Etcher/balena references removed)	✅ Done
Reduce bundle size (target <100 MB)	🔜 v3.1
Faster writes (direct I/O)	🔜 v3.1
Resume interrupted writes	🔜 v3.1
Fix Apple Silicon	⏳ Needs Mac hardware to test
Fix macOS code signing	⏳ Needs Apple Developer account

What shipped in v3.0.0

• Complete rebrand: Spark logo, all env vars, UI strings, config files, install paths
• New dark theme: #1a1a2e background, amber #f59e0b / red #ef4444 accents, Inter font
• SHA256 checksum auto-verification with progress indicator
• Improved error messages with troubleshooting suggestions
• Keyboard shortcuts: Ctrl+O (open file), Ctrl+, (settings), Esc (close)
• Settings panel with 7 toggles in 3 sections + shortcuts reference
• Progress bar redesign: amber (decompress), red (flash), green (verify)
• Translations updated: English, Chinese Simplified, Chinese Traditional

Builds available

• Windows: .exe installer + portable .zip
• Linux: .deb + portable .zip