Koogeek Smart Plug #KLUP1 {Not Flashing}

Hello,
Device - "https://www.amazon.co.uk/gp/product/B07XGRG9SB/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&th=1"
Probem - Device failed to flash using Raspberry Pi 3 - Model B (Linux raspberrypi 4.19.66-v7+)
Smart Plug in pairing mode with rapid flashing LED.

Method 1, with Wemos d1 as AP (device LED flashing, then solid as flashing commences)
Log:
Attempting to stop wpa_supplicant
Configuring AP interface...
RTNETLINK answers: Network is down
RTNETLINK answers: Network is down
Starting DNSMASQ server...
Starting AP on wlan0...
Configuration file: /dev/stdin
wlan0: Could not connect to kernel driver
Using interface wlan0 with hwaddr b8:27:eb:79:30:e5 and ssid "vtrust-flash"
wlan0: interface state UNINITIALIZED->ENABLED
wlan0: AP-ENABLED
wlan0: AP-STA-CONNECTED dc:4f:22:17:f3:6c
wlan0: interface state ENABLED->DISABLED
wlan0: AP-STA-DISCONNECTED dc:4f:22:17:f3:6c
wlan0: AP-DISABLED
nl80211: deinit ifname=wlan0 disabled_11b_rates=0
AP closed
Stopping DNSMASQ server...

Method 2, with android phone as AP (phone gets ip from pi)
Log:
Configuring AP interface...
RTNETLINK answers: File exists
Starting DNSMASQ server...
Starting AP on wlan0...
Configuration file: /dev/stdin
wlan0: Could not connect to kernel driver
Using interface wlan0 with hwaddr b8:27:eb:79:30:e5 and ssid "vtrust-flash"
wlan0: interface state UNINITIALIZED->ENABLED
wlan0: AP-ENABLED
wlan0: AP-STA-CONNECTED 2c:fd:ab:ce:ce:3d
wlan0: interface state ENABLED->DISABLED
wlan0: AP-STA-DISCONNECTED 2c:fd:ab:ce:ce:3d
wlan0: AP-DISABLED
nl80211: deinit ifname=wlan0 disabled_11b_rates=0
AP closed
Stopping DNSMASQ server...

Please help. Thank You.