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My problem finally resolved, thanks a lot for files, in meanwhile GoodWe support sent same files. So I can confirm that 07X firmware file also cover 1st generation GW3648D-ES (as 5048) with no ARM. Definitely EZflash D determined for new models, S for older HW version.

Thanks a lot. Yes, my model is the lower then your/older revision, but the hardware or main board should be very similar, including the two TMS320 CPUs. It seems that the versions you used in EZFlash relate to the ‘S’ index. My inverter is currently with a local service partner, so I’ll see if they manage to recover it. I’ll let you know the result after return and trial. For flash I used EZFlash 1.2.5D version attached : I wonder if D stands for Dual and S for single CPU. As newer hw could be splitted to both cpu, however older revision copy to both. I’m also referring to this thread: https://powerforum.co.za/topic/2517-goodwe-es-46kw-firmware-update/#comment-43514 In my case, the flashing process gets stuck during the erase or programming phase of the Master, and the Slave does not run at all. [28384-02036] 2026-05-27 13:04:31.402 : Master cpu update in progress... [28384-02036] 2026-05-27 13:05:11.660 : Erase Start! [28384-02036] 2026-05-27 13:05:11.661 : Send data for setting baud rate: [28384-02036] 2026-05-27 13:05:11.661 : 5345544241554439363030 [28384-02036] 2026-05-27 13:05:11.872 : Receive data for setting baud rate: [28384-02036] 2026-05-27 13:05:11.872 : 3936303045544241554439363030000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000020 [28384-02036] 2026-05-27 13:05:11.873 : Send Data: [28384-02036] 2026-05-27 13:05:11.873 : 466c617368554d0d [28384-02036] 2026-05-27 13:05:12.077 : Receive Data: [28384-02036] 2026-05-27 13:05:12.088 : 4dó908466c617368554d0d000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000020 [28384-02036] 2026-05-27 13:05:12.089 : Send Data: [28384-02036] 2026-05-27 13:05:12.089 : 534554424155443139323030 [28384-02036] 2026-05-27 13:05:12.297 : Receive Data: [28384-02036] 2026-05-27 13:05:12.297 : 3139323045544241554431393230300000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000020 [28384-02036] 2026-05-27 13:05:15.305 : Send Data: [28384-02036] 2026-05-27 13:05:15.305 : 0000000000000000 [28384-02036] 2026-05-27 13:05:15.665 : Send Data: [28384-02036] 2026-05-27 13:05:15.665 : 0166ó900001c0000 [28384-02036] 2026-05-27 13:05:15.666 : Send Data: [28384-02036] 2026-05-27 13:05:15.666 : 000a000000000000000000 [28384-02036] 2026-05-27 13:05:15.775 : Receive Data: [28384-02036] 2026-05-27 13:05:15.775 : 0666ó90000080000000000000000 [28384-02036] 2026-05-27 13:05:17.806 : Receive Data: [28384-02036] 2026-05-27 13:05:17.806 : 0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 [28384-02036] 2026-05-27 13:05:17.806 : Erase Status Value(0) [28384-02036] 2026-05-27 13:05:19.842 : Receive Data: [28384-02036] 2026-05-27 13:05:19.842 : 0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 [28384-02036] 2026-05-27 13:05:19.842 : Erase Status Value(0) [28384-02036] 2026-05-27 13:05:21.865 : Receive Data: [28384-02036] 2026-05-27 13:05:21.865 : 0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 [28384-02036] 2026-05-27 13:05:21.865 : Erase Status Value(0) [28384-02036] 2026-05-27 13:05:23.984 : Receive Data: [28384-02036] 2026-05-27 13:05:23.984 : 01ó96600000a0000000000000000 [28384-02036] 2026-05-27 13:05:24.008 : Erase End! [28384-02036] 2026-05-27 13:05:24.040 : Programming in progress,DO NOT interrupt it! [28384-02036] 2026-05-27 13:05:24.042 : Send Data: [28384-02036] 2026-05-27 13:05:24.042 : 06ó96600000800000166ó901001e0000000b003dĚ000000000010000000000000000 [28384-02036] 2026-05-27 13:05:24.162 : Receive Data: [28384-02036] 2026-05-27 13:05:24.162 : 0666ó9010008000001ó96601000a0000000c00000b003dĚ000000000010000000000000000 [28384-02036] 2026-05-27 13:05:24.162 : Program Status Value(12) [28384-02036] 2026-05-27 13:05:24.163 : Send Data: [28384-02036] 2026-05-27 13:05:24.163 : 06ó96600000800000166ó901001e0000000b003dĚ000000000010000000000000000 [28384-02036] 2026-05-27 13:05:28.193 : Receive Data: [28384-02036] 2026-05-27 13:05:28.193 : 0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 [28384-02036] 2026-05-27 13:05:28.193 : Program Status Value(0) [28384-02036] 2026-05-27 13:05:28.194 : Send Data: [28384-02036] 2026-05-27 13:05:28.194 : 06ó96600000800000166ó901001e0000000b003dĚ000000000010000000000000000 [28384-02036] 2026-05-27 13:05:32.207 : Receive Data: [28384-02036] 2026-05-27 13:05:32.207 : 0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 [28384-02036] 2026-05-27 13:05:32.207 : Program Status Value(0) [28384-02036] 2026-05-27 13:05:32.209 : Send Data: [28384-02036] 2026-05-27 13:05:32.209 : 06ó96601000800000166ó902001c0000000d000000000000000000 [28384-02036] 2026-05-27 13:05:36.221 : Receive Data: [28384-02036] 2026-05-27 13:05:36.221 : 0000000f00000010 [28384-02036] 2026-05-27 13:05:36.247 : Reset complete! [28384-02036] 2026-05-27 13:05:46.261 : Send Data: [28384-02036] 2026-05-27 13:05:46.261 : 5345544241554439363030 EzFlash1.2.5.rar

Hi Tokolosh, I’m adding my firmware version here. This older GW3648D‑ES hardware revision only reports the DSP firmware, not the ARM/HID versions. Do you know which .out files are correct for EZFlash on this early yellow‑case model? My inverter is now stuck after flashing the 410‑04025‑15(49).out / 410‑04026‑15(49).out pair, which seems to be intended for a newer hardware revision but not 100% sure. Any guidance from your past experience with recovering firmware 2.x or 07x would be extremely helpful.

Hi all, In case you need to update the obsolete Pylontech Phantom‑S model (based on the US2000B platform) from an older 1.7 firmware version to a newer one, please see the confirmation below: Please see capacity calculation difference vers versions 1.7 and 2.4. From 1.7/B63t: to 2.4 - see within forum for us2000b _v2.4.bin to 2.9 - after a successful flash to version 2.9, the device name will change from Phantom‑S to US2KBPL. See the forum thread for the us2000b v2.9Crc.bin file (the version will be shown as 2.8). pylon_debug>info @ Device address : 2 Manufacturer : Pylon Device name : US2KBPL Board version : PHANTOMSAV10R01 Main Soft version : B67.9.0 Soft version : V2.8 Boot version : V1.4 Comm version : V2.0 Release Date : 21-04-29 Barcode : PPTAH01177313019 finally to 3.4 - see for version us2000B_Plus_V3.4_Crc.bin pylon_debug>info @ Device address : 2 Manufacturer : Pylon Device name : US2KBPL Board version : PHANTOMSAV10R01 Main Soft version : B67.13.0.0 Soft version : V3.4 Boot version : V1.4 Comm version : V2.0 Release Date : 21-08-07 Barcode : PPTAH01177313019 Enjoy, and make sure not to mix firmware versions. I’m not sure whether it was necessary to go through each intermediate update — maybe it’s possible to jump straight to the latest version. But I updated step by step. I used only the BatteryView software, not UpgradeTool V1.0.9, since no bootloader update was required.

and DIP setting for Goodwe - Pylontech:

If someone interested see my CAN connection :

US_C_stV2.8_NTV2.1Crc.zip Hi all, new v2.1 firmware for US2000C_3000C is available : Check always correct chip first and then enjoyyy.....