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↑ ↓ → ← ↔ ▲ ▼ ► ◄ △ ⇿ ⇾ ⇽ ⇼ ⇻ ⇺ ⇹ ⇸ ⇶ ⇵ ⇳ ⇲ ⇱ ⇪ ⇩ ⇨ ⇧ ⇦⇥ ⇤ ⇣ ⇢ ⇡ ⇠⇛⇚⇙ ⇘ ⇗ ⇖ ⇕ ⇔ ⇓ ⇒ ⇑ ⇐ ⇌ ⇋ ⥊ ⥋ ⇆ ⇅ ⇄ ↻ ↺ ↹ ↷ ↶ ↵ ↴ ↳ ↲ ↱ ↰ ↮ ↬ ↫ ↨ ↧ ↦ ↥ ↤ ↛ ↚ ↙ ↘ ↗ ↖ ↕
• ‣ ⁃ ◘ ◦ ⦾ ⦿ ✓ ✔ ☑ ☒ ⦿ ⦾ ✪ ☓ ✖ « » ✗ ❞ ❝
♲ ♳ ♴ ♵ ♶ ♷ ♸ ♹ ♺ ♻ ♼ ♽
© ℗ ⓒ ® ™
℃ ℉ °
♡ ♥ ❤ ∞☺☻♂ ♀ ☯
♩ ♪ ♫ ♭ ♮ ♯ 𝄪 𝄆 𝄇 𝄈 𝄐 𝄑 𝄒 𝆒 𝆓 𝄫 𝄞 𝄢 𝄡
¼ ½ ¾ ⅓ ⅔ ⅛ ⅜ ⅝ ≈ > ≥ ≧ ≩ ≫ ≳ ⋝ ÷ ∕ ± ∓ ≂ ⊟ ⊞ ⨁ ⨤ ⨦ % ∟∠∡ ⊾⟀ ⦜ ⦛ ⦠ √ ∛ ∜ ⍍ ≡ ≢ ⧥ ⩧ ⅀ ◊ ⟠ ⨌⨍⨏ ⨜ ⨛ ◜ ◝ ◞ ◟ ⤸ ⤹ ◆ ◇ ❖ ○ ◍ ● ◐ ◑ ◒ ◓ ◔ ◕ ◖ ◗ ⬡ ⬢ ‰ ⁿ ¹ ² ³ § ∞ ㅅ ⌖ ◧ ◨ ◩ ◪ ▢ ▣ ▤ ▥ ▦ ▧ ▨ ▩ ▪ ▫ ▬ ▭ ▮ ▯ ▰ ▱ ◆ ◇ ◈ ◉ ◊ ○ ◌ ◎ ◘ ◙ ◚ ◛ ◜ ◝ ◞ ◟ ◠ ◡ ◢ ◣ ◤ ◥ ◦ ◫ ◬ ◭ ◮ ◯ ▲ △ ▴ ▵ ▶ ▷ ▸ ▹ ► ▻ ▼ ▽ ▾ ▿ ◀ ◁ ◂ ◃ ◄ ◅
£ € $ ¢ ¥ ƒ ₧ ؋ ₳ ฿ ₵ ₡ ₢ ₫ ₯ ₠ ₣ ₲ ₴ ₭ ₺ ℳ ₥ ₦ ₱ ₰ 元 圆 圓 ﷼ ₹ ₨ ₪ ₸ ₮ ₩ ¥ 円
α Α ß Β γ Γ δ Δ ε Ε ζ Ζ η Η θ ϴ ι Ι κ Κ λ Λ μ Μ ν Ν ξ Ξ ο Ο π Π ρ Ρ σ Σ τ Τ ϒ Υ φ ϕ ψ Ψ ω Ω
⋆ ✢ ✥ ✦ ✧ ❂ ❉ ✱ ✲ ✴ ✵ ✶ ✷ ✸ ❇ ✹ ✺ ✻ ✼ ❈ ✮ ✡
♒ ♓ ♈ ♉ ♊ ♋ ♌ ♍ ♎ ♏ ♐ ♑
☼ ☽ ☾ ❅ ❆ ϟ ☀ ☁ ☂ ☃ ☄ ☼
♔ ♚ ♕ ♛ ♗ ♝ ♘ ♞ ♙ ♟ ♖ ♜
⌀⌁⌂⍳⍴ ⍵ ⍶ ⍷ ⍸ ⍹ ⍺ ⌃⌄⌅⌆⌇⌈⌉⌊⌋⌌⌍⌎⌏⌐⌑⌒⌓⌔⌕⌖⌗⌘⌙⌚⌛⌜⌝⌞⌟⌠⌡⌢⌣⌤ ⌥ ⌦⌧⌫⌬⌭⌮⌯⌰⌱⌲⌳⌴⌵⌶⌿⍀⍁ ⍂ ⍃ ⍄ ⍅ ⍆ ⍇ ⍈ ⍉ ⍊ ⍋ ⍌ ⍍ ⍎ ⍏ ⍐ ⍒ ⍓ ⍔ ⍕ ⍖ ⍗ ⍘ ⍙ ⍚ ⍜ ⍝ ⍞ ⍟ ⍠ ⍡ ⍢ ⍣ ⍤ ⍥ ⍦ ⍧ ⍨ ⍩ ⍪ ⍫ ⍬ ⍭ ⍮ ⍯ ⍰ ⌷ ⌸ ⌹ ⌺ ⌻ ⌼ ⍱ ﹘﹝﹞
⓪ ① ② ③ ④ ⑤ ⑥ ⑦ ⑧ ⑨
ⓐ ⓑ ⓒ ⓓ ⓔ ⓕ ⓖ ⓗ ⓘ ⓙ ⓚ ⓛ ⓜ ⓝ ⓞ ⓟ ⓠ ⓡ ⓢ ⓣ ⓤ ⓥ ⓦ ⓧ ⓨ ⓩ
Ⓐ Ⓑ Ⓒ Ⓓ Ⓔ Ⓕ Ⓖ Ⓗ Ⓘ Ⓙ Ⓚ Ⓛ Ⓜ Ⓝ Ⓞ Ⓟ Ⓠ Ⓡ Ⓢ Ⓣ Ⓤ Ⓥ Ⓦ Ⓧ Ⓨ Ⓩ
If OTA fails or you need a clean install (e.g., device stuck in boot loop), use this manual method. Caution: This will erase all data (apps, settings, user data).
On the Sunmi V2:
Sunmi has not discontinued the V2, but updates are becoming less frequent (roughly quarterly) as focus shifts to newer models like the V3 and V2s. However, security patches for payment modules remain mandatory for PCI compliance.
Businesses should plan for eventual hardware migration, but with proper firmware management, the V2 will remain viable until at least 2026–2027.
Warning: Do not download firmware from random forums or file-sharing sites. Corrupted or malicious firmware can brick your device or steal payment data.
Sunmi provides official firmware through two channels:
Even with official files, problems occur. Here are the top five issues and solutions:
| Issue | Possible Solution | |-------|-------------------| | Device stuck on logo | Perform a factory reset from recovery, then reflash firmware. | | Printer not working after update | Reinstall printer drivers via Sunmi Toolkit or reapply firmware. | | Touchscreen unresponsive | Flash the correct touch firmware (often a separate file for the V2’s ILITEK or Goodix chip). | | Update fails with “signature verification error” | Firmware is not official or mismatched for the hardware revision. |