Tahir Posted August 14 Share Posted August 14 MPPT module firmware required Quote Link to comment Share on other sites More sharing options...
Coulomb Posted August 14 Share Posted August 14 I'd say that this is a PWM solar charger, not an MPPT solar charger. I don't have much to do with these smaller models. I believe that the only PWM solar charge controller firmwares that I have are 03.20 and 06.09. I don't know how to tell the differences in these. What is the present SCC firmware version? I think it will appear as U2 on your display. Is there anything readable on the sticker over the processor? These are a bit tricky to flash program. Are you sure you really need to update the firware? These two firmwares are quite old: 2014 and 2020, according to the hex (.s19) file dates. Quote Link to comment Share on other sites More sharing options...
Tahir Posted August 14 Author Share Posted August 14 (edited) 9 hours ago, Coulomb said: I believe that the only PWM solar charge controller firmwares that I have are 03.20 and 06.09. I don't know how to tell the differences in these. U1 06 24 and U2 don't know Please share files i will try I have already try these firmware 0315, 0320, 0323 on attach pic but not working Ver0208.mppt file is not uploading dueto processor not supporting Edited August 14 by Tahir Quote Link to comment Share on other sites More sharing options...
Tahir Posted August 15 Author Share Posted August 15 (edited) Here are pictures of another same inverter Edited August 15 by Tahir Quote Link to comment Share on other sites More sharing options...
Coulomb Posted August 16 Share Posted August 16 On 2024/08/15 at 2:35 AM, Tahir said: Please share files i will try It looks like you've already tried 03.20, though you didn't say exactly how it failed. It's quite tricky updating SCC firmware; you need to do some registering of a binary device driver or some such; read the instructions carefully. It's nowhere near as easy as main firmware updating. The following has main firmware version 15.61 and SCC firmware version 03.20; these seem to be different to yours. So I'd give it about a 5% chance of working at all, and about a 1% chance of fixing the solar charger. But if you're desperate: KS_1_3k_1561 0320.zip Similarly this one has 12.30 main and 06.09 solar charger: KS_5K_12.30 06.09.zip Good luck; that machine seems like a poorly made clone or workalike to me. Even the display segments are different to that of Axperts. So I'm afraid that your prospects are dim. Quote Link to comment Share on other sites More sharing options...
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