bisonravi

And here is the remote display/panel(U2: 80.35)) firmware for EASUN/POWLAND...IGRID SV IV 5.6K (parallel) Remote Panel - 3573-08S7 INFINISOLAR V IV 80.35.zip

After a long fight with EASUN costumer service, i managed to get the 2 firmwares for IGRID SV IV 5.6K (parallel function). For what ever reason, flashing DSP (U1: 54.04) worked flowlessly, even with the Inverter "bricked" with error 32. (charged battery connected, switch on, like the manual recommend). Display firmware, (U2: 8035), also worked So now my inverter works again, except that i have lost WIFI function in the process... so it seems that i have to change remote card anyway...But its another story... If you have IGRID SV IV 5.6K parallel, (mine is from DEC 21 in the sticker), and you have no success with the firmwares shared on this forum or from voltronic FTP, i am sharing the 2 files given by EASUN. cheers, 3570-02S2 Upgrade_2809_DSP INFINI V IV 5.6K 54.04.zip

@Michael_GermanyHello, did you finaly unbrick your Igrid SV IV 5.6K ? if yes, i would love to know how! I have exactly the same model with the same U1 (05401) and U2(04022) from factory. it was working fine with some pylontech US2000 but i had some issues when ii have added 2 new US5000 (error 61). So i have flashed U2 (80.42) from voltronic's ftp: after that update i got a "BP" warning (battery not attched!). i thought maybe flashing main firmware could save the day. i have tried flashing from PC with original cable on serial port, and with a usb /db9 adaptor;not succes. it doesnt communicated well. the update of U2 firmware works fine with those cables! So i have tried with usb /OTG but the process crashed quickly after trying to read the file. From that point, iam stuck with a 32 warning. Even with the display not working properly, it seems possible to use the "UPG" usb function in that mode but no luck yet. i have tried 3 different usb sticks, and a card reader (SD). Iam running out of ideas!