Well no quite :) Things are a bit more complex. First of all let me describe my home WiFi. The same SSID (rjanet) is served by both the Modem (MAC DC:39:6F:EF:E9:DE) and the repeater (MAC 98:9B:CB:E2:3E:9B) and while doing this troubleshooting I am closer to the latter (hence the stronger signal). If you look at the following trace it will show that the dreaded auth error prevented the connection (even with the same good signal) but unlike my previous modem after a couple of retries it succeeded. Does this shed any additional light? Hard resetting via RTS pin... ========================= [SUCCESS] Took 23.94 seconds ========================= INFO Successfully uploaded program. INFO Starting log output from /dev/cu.SLAB_USBtoUART with baud rate 115200 [13:48:16][I][logger:156]: Log initialized [13:48:16][C][ota:364]: There have been 3 suspected unsuccessful boot attempts. [13:48:16][I][app:028]: Running through setup()... [13:48:16][C][dht:011]: Setting up DHT... [13:48:16][C][wifi:033]: Setting up WiFi... [13:48:16][D][wifi:304]: Starting scan... [13:48:16][D][dht:048]: Got Temperature=19.3°C Humidity=1.0% [13:48:16][D][sensor:092]: 'Bagno T': Sending state 19.30000 °C with 1 decimals of accuracy [13:48:16][D][sensor:092]: 'Bagno H': Sending state 1.00000 % with 0 decimals of accuracy [13:48:18][D][wifi:319]: Found networks: [13:48:18][I][wifi:365]: - 'rjanet' (98:9B:CB:E2:3E:9B) ▂▄▆█ [13:48:18][D][wifi:366]: Channel: 1 [13:48:18][D][wifi:367]: RSSI: -47 dB [13:48:18][I][wifi:365]: - 'rjanet' (DC:39:6F:EF:E9:DE) ▂▄▆█ [13:48:18][D][wifi:366]: Channel: 1 [13:48:18][D][wifi:367]: RSSI: -57 dB [13:48:18][D][wifi:369]: - 'DIRECT-2B-HP OfficeJet 3830' (C8:D9:D2:44:A6:2C) ▂▄▆█ [13:48:18][D][wifi:369]: - 'Zamunda Fibra' (A4:91:B1:39:6E:53) ▂▄▆█ [13:48:18][D][wifi:369]: - 'TIM-53331562' (78:81:02:99:F8:FB) ▂▄▆█ [13:48:18][D][wifi:369]: - 'TIM-53331562_2GEXT' (B0:39:56:B7:A0:F3) ▂▄▆█ [13:48:18][I][wifi:193]: WiFi Connecting to 'rjanet'... [13:48:19][W][wifi_esp32:336]: Event: Disconnected ssid='rjanet' bssid=98:9B:CB:E2:3E:9B reason='Authentication Failed' [13:48:19][W][wifi:470]: Connecting to WiFi network failed. Are the credentials wrong? [13:48:19][I][wifi:193]: WiFi Connecting to 'rjanet'... [13:48:19][W][wifi:470]: Connecting to WiFi network failed. Are the credentials wrong? [13:48:24][D][wifi:304]: Starting scan... [13:48:26][D][wifi:319]: Found networks: [13:48:26][I][wifi:365]: - 'rjanet' (DC:39:6F:EF:E9:DE) ▂▄▆█ [13:48:26][D][wifi:366]: Channel: 1 [13:48:26][D][wifi:367]: RSSI: -58 dB [13:48:26][I][wifi:365]: - 'rjanet' (98:9B:CB:E2:3E:9B) ▂▄▆█ [13:48:26][D][wifi:366]: Channel: 1 [13:48:26][D][wifi:367]: RSSI: -45 dB [13:48:26][D][wifi:369]: - 'Zamunda Fibra' (A4:91:B1:39:6E:53) ▂▄▆█ [13:48:26][D][wifi:369]: - 'TIM-53331562' (78:81:02:99:F8:FB) ▂▄▆█ [13:48:26][D][wifi:369]: - 'Fritz-Router2,4GHz' (E8:DF:70:69:20:7C) ▂▄▆█ [13:48:26][D][wifi:369]: - 'TIM-53331562_2GEXT' (B0:39:56:B7:A0:F3) ▂▄▆█ [13:48:26][D][wifi:369]: - 'DIRECT-2B-HP OfficeJet 3830' (C8:D9:D2:44:A6:2C) ▂▄▆█ [13:48:26][I][wifi:193]: WiFi Connecting to 'rjanet'... [13:48:26][I][wifi:423]: WiFi Connected! [13:48:26][C][wifi:283]: SS: Event: Disconnec[W][wifi_esp32:336]: Event: Disconnected ssid='rjanet' bssid=98:9B:CB:E2:3E:9B reason='Association Leave' [13:48:26] [13:48:26][C][wifi:284]: IP Address: 0.0.0.0 [13:48:26][C][wifi:286]: BSSID: 00:00:00:00:00:00 [13:48:26][C][wifi:287]: Hostname: 'bagno' [13:48:26][C][wifi:291]: Signal strength: 0 dB ▂▄▆█ [13:48:26][C][wifi:295]: Channel: 1 [13:48:26][C][wifi:296]: Subnet: 0.0.0.0 [13:48:26][C][wifi:297]: Gateway: 0.0.0.0 [13:48:26][C][wifi:298]: DNS1: 192.168.1.254 [13:48:26][C][wifi:299]: DNS2: 0.0.0.0 [13:48:26][D][wifi:432]: Disabling AP... [13:48:26][W][wifi:100]: WiFi Connection lost... Reconnecting... [13:48:28][W][wifi_esp32:336]: Event: Disconnected ssid='rjanet' bssid=DC:39:6F:EF:E9:DE reason='Auth Expired' [13:48:31][D][wifi:304]: Starting scan... [13:48:32][D][wifi:319]: Found networks: [13:48:32][I][wifi:365]: - 'rjanet' (DC:39:6F:EF:E9:DE) ▂▄▆█ [13:48:32][D][wifi:366]: Channel: 1 [13:48:32][D][wifi:367]: RSSI: -58 dB [13:48:32][I][wifi:365]: - 'rjanet' (98:9B:CB:E2:3E:9B) ▂▄▆█ [13:48:32][D][wifi:366]: Channel: 1 [13:48:32][D][wifi:367]: RSSI: -48 dB [13:48:32][D][wifi:369]: - 'DIRECT-2B-HP OfficeJet 3830' (C8:D9:D2:44:A6:2C) ▂▄▆█ [13:48:32][D][wifi:369]: - 'TIM-53331562' (78:81:02:99:F8:FB) ▂▄▆█ [13:48:32][D][wifi:369]: - 'TIM-53331562_2GEXT' (B0:39:56:B7:A0:F3) ▂▄▆█ [13:48:32][D][wifi:369]: - 'Zamunda Fibra' (A4:91:B1:39:6E:53) ▂▄▆█ [13:48:32][D][wifi:369]: - 'casa-varrina' (EA:DF:70:69:20:7C) ▂▄▆█ [13:48:32][I][wifi:193]: WiFi Connecting to 'rjanet'... [13:48:32][W][wifi:451]: Error while connecting to network. [13:48:32][W][wifi:488]: Restarting WiFi adapter... [13:48:33][I][wifi:193]: WiFi Connecting to 'rjanet'... [13:48:34][W][wifi_esp32:336]: Event: Disconnected ssid='rjanet' bssid=DC:39:6F:EF:E9:DE reason='Auth Expired' [13:48:34][W][wifi:451]: Error while connecting to network. [13:48:34][W][wifi:488]: Restarting WiFi adapter... [13:48:39][D][wifi:304]: Starting scan... [13:48:40][D][wifi:319]: Found networks: [13:48:41][I][wifi:365]: - 'rjanet' (98:9B:CB:E2:3E:9B) ▂▄▆█ [13:48:41][D][wifi:366]: Channel: 1 [13:48:41][D][wifi:367]: RSSI: -48 dB [13:48:41][I][wifi:365]: - 'rjanet' (DC:39:6F:EF:E9:DE) ▂▄▆█ [13:48:41][D][wifi:366]: Channel: 1 [13:48:41][D][wifi:367]: RSSI: -59 dB [13:48:41][D][wifi:369]: - 'Zamunda Fibra' (A4:91:B1:39:6E:53) ▂▄▆█ [13:48:41][D][wifi:369]: - 'DIRECT-2B-HP OfficeJet 3830' (C8:D9:D2:44:A6:2C) ▂▄▆█ [13:48:41][D][wifi:369]: - 'TIM-53331562' (78:81:02:99:F8:FB) ▂▄▆█ [13:48:41][D][wifi:369]: - 'TIM-53331562_2GEXT' (B0:39:56:B7:A0:F3) ▂▄▆█ [13:48:41][I][wifi:193]: WiFi Connecting to 'rjanet'... [13:48:41][I][wifi:423]: WiFi Connected! [13:48:41][C][wifi:283]: SSID: 'rjanet' [13:48:41][C][wifi:284]: IP Address: 192.168.1.54 [13:48:41][C][wifi:286]: BSSID: 98:9B:CB:E2:3E:9B [13:48:41][C][wifi:287]: Hostname: 'bagno' [13:48:41][C][wifi:291]: Signal strength: -45 dB ▂▄▆█ [13:48:41][C][wifi:295]: Channel: 1 [13:48:41][C][wifi:296]: Subnet: 255.255.255.0 [13:48:41][C][wifi:297]: Gateway: 192.168.1.254 [13:48:41][C][wifi:298]: DNS1: 192.168.1.254 [13:48:41][C][wifi:299]: DNS2: 0.0.0.0 [13:48:41][D][wifi:432]: Disabling AP... [13:48:41][C][ota:029]: Over-The-Air Updates: [13:48:41][C][ota:030]: Address: bagno.local:3232 [13:48:41][W][ota:036]: Last Boot was an unhandled reset, will proceed to safe mode in 7 restarts [13:48:41][C][api:022]: Setting up Home Assistant API server... [13:48:41][I][app:058]: setup() finished successfully! [13:48:41][I][app:100]: ESPHome version 1.14.3 compiled on Apr 1 2020, 13:47:44 [13:48:41][C][wifi:415]: WiFi: [13:48:41][C][wifi:283]: SSID: 'rjanet' [13:48:41][C][wifi:284]: IP Address: 192.168.1.54 [13:48:41][C][wifi:286]: BSSID: 98:9B:CB:E2:3E:9B [13:48:41][C][wifi:287]: Hostname: 'bagno' [13:48:41][C][wifi:291]: Signal strength: -45 dB ▂▄▆█ [13:48:41][C][wifi:295]: Channel: 1 [13:48:41][C][wifi:296]: Subnet: 255.255.255.0 [13:48:41][C][wifi:297]: Gateway: 192.168.1.254 [13:48:41][C][wifi:298]: DNS1: 192.168.1.254 [13:48:41][C][wifi:299]: DNS2: 0.0.0.0 [13:48:41][C][logger:175]: Logger: [13:48:41][C][logger:176]: Level: DEBUG [13:48:41][C][logger:177]: Log Baud Rate: 115200 [13:48:41][C][logger:178]: Hardware UART: UART0 [13:48:41][C][dht:017]: DHT: [13:48:41][C][dht:018]: Pin: GPIO4 (Mode: INPUT) [13:48:41][C][dht:024]: Model: DHT22 (or equivalent) [13:48:41][C][dht:027]: Update Interval: 300.0s [13:48:41][C][dht:029]: Temperature 'Bagno T' [13:48:41][C][dht:029]: Unit of Measurement: '°C' [13:48:41][C][dht:029]: Accuracy Decimals: 1 [13:48:41][C][dht:029]: Icon: 'mdi:thermometer' [13:48:41][C][dht:030]: Humidity 'Bagno H' [13:48:41][C][dht:030]: Unit of Measurement: '%' [13:48:41][C][dht:030]: Accuracy Decimals: 0 [13:48:41][C][dht:030]: Icon: 'mdi:water-percent' [13:48:41][C][captive_portal:169]: Captive Portal: [13:48:41][C][ota:029]: Over-The-Air Updates: [13:48:41][C][ota:030]: Address: bagno.local:3232 [13:48:41][W][ota:036]: Last Boot was an unhandled reset, will proceed to safe mode in 7 restarts [13:48:41][C][api:095]: API Server: [13:48:41][C][api:096]: Address: bagno.local:6053 [13:50:16][I][ota:046]: Boot seems successful, resetting boot loop counter. [13:51:40][D][dht:048]: Got Temperature=19.3°C Humidity=1.0% [13:51:40][D][sensor:092]: 'Bagno T': Sending state 19.30000 °C with 1 decimals of accuracy [13:51:40][D][sensor:092]: 'Bagno H': Sending state 1.00000 % with 0 decimals of accuracy