I want to share my recent experience updating the Skoda Octavia 3 FL Swing unit (LG MEN2), because a lot of details are not clearly documented anywhere, or I did not find that. Hopefully this helps someone avoid problems during FW update. My unit configuration Head unit: Swing (MEN2, LG) HW number: 5E0 035 869 D Original firmware: MEN2_EU_SKGPx_P7381L / MU 8740 Modules present: MU‑CPU, MU‑PIC, MU‑DAB, BT, SmartLink Modules NOT presented: MU‑TNR, ENGECU - This is very important later, because missing modules must be unchecked manually. Why I updated? After updating my iPhone to iOS 26.1, CarPlay stopped working. A factory reset solved the issue, but I decided to update the firmware to 8755 for stability. Update procedure - Use SD card, FAT32 (USB should also work, but SD is more reliable). Copy the content (not the folder) of the firmware package MEN2_EU_SKGPx_P0080L_8755 to the root of the SD card. Thanks to @pab567 for providing that. You can also download the package here, the *_working one: https://mibsolution.one/#/1/9/MEN2%20-%20LG - Insert the SD card - Hold SETUP for ~10 seconds to enter UPDATE MENU. - Choose UPDATE. The unit automatically selects modules to update → uncheck everything that does NOT exist in your unit (It has an empty number of application version). In my case, I had to uncheck MU‑TNR and ENGECU, otherwise update failed. - Start update. - Ignition does not need to be ON, but make sure the battery is not weak (keep charger connected if unsure). What happened during my update. The head unit attempted to update all modules including the ones that are physically missing. This resulted in: MU‑CPU and MU‑PIC → updated successfully (8740 → 8755) SmartLink → updated successfully (0072 → 0074) MU‑TNR → update attempted even though module is not present → signature error ENGECU → attempted but does not physically exist → failure Even though the update ended with “Software update failed”, all real modules were actually updated and the system is working. Important advice 1. Always uncheck modules you don’t have. If a module shows “empty” as previous version, you must uncheck it before updating. Otherwise you will get errors like: “33 – Source signature cannot be confirmed. System will restart…” 2. Swing MEN2 (LG) does not show all modules correctly in UPDATE MENU and missing modules may appear in the list → just uncheck them. 3. No downgrade possible. Once updated to 8755, you cannot return to 8740 (cryptographic signature prevents it). Hope this helps future Swing users!