OpenWrt on Mikrotik hAP ac, problem with TFTP

Hello,

I successfully migrated one hAP ac to OpenWRT, but with the second (older one) I get the following dnsmasq log

dnsmasq-dhcp: 774467461 available DHCP range: 192.168.88.100 -- 192.168.88.200
dnsmasq-dhcp: 774467461 vendor class: Mips_boot
dnsmasq-dhcp: 774467461 DHCPDISCOVER(eth0) XX:XX:XX:XX:XX:XX 
dnsmasq-dhcp: 774467461 tags: eth0
dnsmasq-dhcp: 774467461 DHCPOFFER(eth0) 192.168.88.135 XX:XX:XX:XX:XX:XX 
dnsmasq-dhcp: 774467461 requested options: 1:netmask, 3:router
dnsmasq-dhcp: 774467461 bootfile name: openwrt-19.07.7-ar71xx-mikrotik-rb-nor-flash-16M-ac-initramfs-kernel.bin
dnsmasq-dhcp: 774467461 next server: 192.168.88.10
dnsmasq-dhcp: 774467461 sent size:  1 option: 53 message-type  2
dnsmasq-dhcp: 774467461 sent size:  4 option: 54 server-identifier  192.168.88.10
dnsmasq-dhcp: 774467461 sent size:  4 option: 51 lease-time  1h
dnsmasq-dhcp: 774467461 sent size:  4 option: 58 T1  30m
dnsmasq-dhcp: 774467461 sent size:  4 option: 59 T2  52m30s
dnsmasq-dhcp: 774467461 sent size:  4 option:  1 netmask  255.255.255.0
dnsmasq-dhcp: 774467461 sent size:  4 option: 28 broadcast  192.168.88.255
dnsmasq-dhcp: 774467461 sent size:  4 option:  3 router  192.168.88.10

repeated multiple times which is then followed by the

dnsmasq-dhcp: 990059024 DHCPREQUEST(eth0) 0.0.0.0 XX:XX:XX:XX:XX:XX 
dnsmasq-dhcp: 990059024 DHCPNAK(eth0) 0.0.0.0 XX:XX:XX:XX:XX:XX wrong network

also repeated multiple times.

I am using the dnsmasq loader.sh configuration from Common Procedures for Mikrotik RouterBoard Products

Replying to self:

Pressing reset button between 15 and 20 seconds brought up netboot and it worked.

I also noticed that PoE is not enabled by default, unlike in Mikrotik, but issuing echo 0 > /sys/class/gpio/gpio3/value even lights up the red LED, which is awesome.

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