Request for ATS-20+ original firmware v1.1.5 (if available)

[elecnclab]

Hi PU2CLR,

First of all, thank you very much for your outstanding work and support to the SI473X Arduino library and all the related projects — they are a real reference for the entire radio and maker community!

I would like to kindly ask if it would be possible to get a copy (or a link) to the original firmware used on the ATS-20+ radios, version v1.1.5, as preloaded on many devices.

Unfortunately, I tried to read it from the chip via ICSP but failed, and I would like to preserve or restore the original firmware after testing your custom builds.

If it's not available, no worries — I understand and appreciate your work either way!

Thanks in advance and best regards from Italy!
Giuseppe
(Electronic & CNC Lab)

[pu2clr]

Olá Giuseppe, Muito obrigado pelas palavras gentis e pelo interesse no meu trabalho com a biblioteca SI473X. Fico feliz em saber que tem sido útil para você e para a comunidade maker! Sobre o firmware original do ATS-20+ (v1.1.5): infelizmente, não tenho esse arquivo. Esse firmware foi uma modificação feita pelo fabricante a partir de um dos firmwares que desenvolvi. Como não tenho nenhuma relação com esses fabricantes, nunca tive acesso direto a essa versão específica. De toda forma, posso garantir que os firmwares que desenvolvi para esses receptores — assim como alguns feitos por outros colegas da comunidade — funcionam muito bem no ATS-20+. Em muitos aspectos, considero até que oferecem desempenho e flexibilidade superiores ao firmware original. Um grande abraço e saudações radioamadoras! PU2CLR – Ricardo

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On Wed, Sep 3, 2025 at 7:02 PM elecnclab ***@***.***> wrote: *elecnclab* created an issue (pu2clr/SI4735#46) <#46> Hi PU2CLR, First of all, thank you very much for your outstanding work and support to the SI473X Arduino library and all the related projects — they are a real reference for the entire radio and maker community! I would like to kindly ask if it would be possible to get a copy (or a link) to the original firmware used on the ATS-20+ radios, version *v1.1.5*, as preloaded on many devices. Unfortunately, I tried to read it from the chip via ICSP but failed, and I would like to preserve or restore the original firmware after testing your custom builds. If it's not available, no worries — I understand and appreciate your work either way! Thanks in advance and best regards from Italy! Giuseppe (Electronic & CNC Lab) — Reply to this email directly, view it on GitHub <#46>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAVSJNEC66MF4JNXKCI6DQ33Q5QOVAVCNFSM6AAAAACFR7J3FSVHI2DSMVQWIX3LMV43ASLTON2WKOZTGM4DCNBSG43DOOA> . You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>

-- Fortaleza, CE - BR Mobile: +55 61981442296 QRZ: http://www.qrz.com/db/PU2CLR

[elecnclab]

Hi Ricardo, Thank you so much for your kind and detailed reply! I really appreciate your work and I admire how your SI473X library has helped the maker and radio enthusiast community around the world. I'm a radio amateur as well — my current callsign is *IU2SDZ* (previously *IK2UMD*). It's great to know you're also part of the ham radio world! Thank you again for your amazing contribution — I’ll definitely try your firmware versions, and maybe even share the results on my YouTube channel. Best 73s from Italy, *Giuseppe – Electronic & CNC ***@***.*** [image: 1.jpg] Il giorno gio 4 set 2025 alle ore 03:04 Ricardo Lima Caratti < ***@***.***> ha scritto:

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*pu2clr* left a comment (pu2clr/SI4735#46) <#46 (comment)> Olá Giuseppe, Muito obrigado pelas palavras gentis e pelo interesse no meu trabalho com a biblioteca SI473X. Fico feliz em saber que tem sido útil para você e para a comunidade maker! Sobre o firmware original do ATS-20+ (v1.1.5): infelizmente, não tenho esse arquivo. Esse firmware foi uma modificação feita pelo fabricante a partir de um dos firmwares que desenvolvi. Como não tenho nenhuma relação com esses fabricantes, nunca tive acesso direto a essa versão específica. De toda forma, posso garantir que os firmwares que desenvolvi para esses receptores — assim como alguns feitos por outros colegas da comunidade — funcionam muito bem no ATS-20+. Em muitos aspectos, considero até que oferecem desempenho e flexibilidade superiores ao firmware original. Um grande abraço e saudações radioamadoras! PU2CLR – Ricardo On Wed, Sep 3, 2025 at 7:02 PM elecnclab ***@***.***> wrote: > *elecnclab* created an issue (pu2clr/SI4735#46) > <#46> > > Hi PU2CLR, > > First of all, thank you very much for your outstanding work and support to > the SI473X Arduino library and all the related projects — they are a real > reference for the entire radio and maker community! > > I would like to kindly ask if it would be possible to get a copy (or a > link) to the original firmware used on the ATS-20+ radios, version > *v1.1.5*, as preloaded on many devices. > > Unfortunately, I tried to read it from the chip via ICSP but failed, and I > would like to preserve or restore the original firmware after testing your > custom builds. > > If it's not available, no worries — I understand and appreciate your work > either way! > > Thanks in advance and best regards from Italy! > Giuseppe > (Electronic & CNC Lab) > > — > Reply to this email directly, view it on GitHub > <#46>, or unsubscribe > < https://github.com/notifications/unsubscribe-auth/AAVSJNEC66MF4JNXKCI6DQ33Q5QOVAVCNFSM6AAAAACFR7J3FSVHI2DSMVQWIX3LMV43ASLTON2WKOZTGM4DCNBSG43DOOA> > . > You are receiving this because you are subscribed to this thread.Message > ID: ***@***.***> > -- Fortaleza, CE - BR Mobile: +55 61981442296 QRZ: http://www.qrz.com/db/PU2CLR — Reply to this email directly, view it on GitHub <#46 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AXERQLSH4P3WUB62NU3HNYD3Q6FZFAVCNFSM6AAAAACFR7J3FSVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZTENJRGI4DOOBSG4> . You are receiving this because you authored the thread.Message ID: ***@***.***>