# Firmware upgrade fail **URL:** \ **Category:** Uncategorized\ **Created:** [October 30, 2024, 5:35am UTC](https://forums.maslowcnc.com/t/firmware-upgrade-fail/22597 "2024-10-30T05:35:56Z")\ **Posts on this page:** 1\ **Page:** 1
**Author:** ![shaune23](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/shaune23/32/20162_2.png) [@shaune23](https://forums.maslowcnc.com/u/shaune23)\ **Post date:** [October 30, 2024, 5:35am UTC](https://forums.maslowcnc.com/t/firmware-upgrade-fail/22597/1 "2024-10-30T05:35:56Z")
I just got my Maslow assembled and working through the set up process. I followed the instructions to update firmware. I uploaded firmware.bin and then the machine disconnected and would not connect again. I could not make any further progress so I decided to do a factory reset. I downloaded fluidnc-maslow4-0.84-win64.zip and ran full-install.bat. I received the following error. C:\Users\shaun\Downloads\fluidnc-maslow4-0.84-win64\fluidnc-maslow4-0.84-win64\>full-install.bat - ------ Erasing flash- \* win64\esptool.exe --chip esp32s3 --baud 921600 erase\_flash esptool.py v4.6 Found 3 serial ports Serial port COM6 Connecting… Chip is ESP32-S3 (revision v0.2) Features: WiFi, BLE Crystal is 40MHz MAC: 48:27:e2:c7:63:d8 Uploading stub… Running stub… Stub running… Changing baud rate to 921600 A fatal error occurred: No serial data received. - ------- Installing filesystem \* win64\esptool.exe --chip esp32s3 --baud 921600 --before default\_reset --after hard\_reset write\_flash -z --flash\_mode dio --flash\_freq 80m --flash\_size detect 0x3d0000 wifi\_s3\littlefs.bin esptool.py v4.6 Found 3 serial ports Serial port COM6 Connecting… Chip is ESP32-S3 (revision v0.2) Features: WiFi, BLE Crystal is 40MHz MAC: 48:27:e2:c7:63:d8 Uploading stub… Running stub… Stub running… Changing baud rate to 921600 Update: I ran the install-fs.bat and that seemed to do the trick.