OK thanks for the clarification, so you will physically move your ET9000 box to your new house where you have no Internet.
The WiFi stick is then to connect it to your smartphone which is turned into an Access Point.
But if the goal is just to get the EPG, I think that you don't need to it connected to the Internet. I think that TNT will broadcast the EPG in EIT format and that you can get several days EPG from the DVB-T tuner.
But if you really need to connect it to WiFi the easiest and more reliable way is to connect its ethernet to a router that support WiFi client.
Like for exemple:
https://www.tp-link....um=select-local
So you don't have to bother about Wifi stick chipset version, linux kernel and drivers on your ET9000.
You configure the router box into WiFi Client mode, then you connect it to your smartphone, and you simply plug and ethernet cable into your ET9000 and this router.
Pr2
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Sat: Hotbird 13.0E, Astra 19.2E, Eutelsat5A 5.0W
VU+ Solo 4K: 2*DVB-S2 + 2*DVB-C/T/T2 (used in DVB-C) & Duo 4K: 2*DVB-S2X + DVB-C (FBC)
AB-Com: PULSe 4K 1*DVB-S2X (+ DVB-C/T/T2)
Edision OS Mio 4K: 1*DVB-S2X + 1*DVB-C/T/T2