Bonny , segui la guida denominata 'Guida ELISA MF286D TIM' che trovi su https://mega.nz/folder/q98SUIrL#oKTAYrYxVD1mUkBL0E41iw. Quando il router ti viene riconosciuto alla sinistra della rgga centrale devi premere il tasto e navigare sino alla cartella 'UPDATE' del firmware che vuoi mettere e lasciare il collegamento cosi come,farà poi tutto il programma e devi aspettare che finisce. Se hai qualche programma di firewall disattivalo.
Debrand e blocco bande su ZTE MF286D TIM
Try another laptop/computer. Have the same issue on one (perhaps there is something more installed ,like wireshark ect), , second one with is pure/fresh have no issue.
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stich86 ,Play is a polish operator , and on polish market these MF286D ara availble. This ofw is presented as CR_NTTPLMF286DV1.0.0B02 , and it have a lot of bugs and lacks ( PIN code not working , no turn off lights , no select agregation ) , and till now no any OTA update. Generally this ofw is suck , that is why it is good to have such Framework , with could change its ofw i.e. to Nordic.
What i can see, not all Frameworks are "ZTE orgin" , some of them are modified. I'm looking a person ,who modify them ,and perhaps he is able to do very quick modification for changing a Play to another ( without comming back to Play again ). So i don't want a Framework with PLAY ofw , i need a Framework with any other ( Nordic , Elisa) with could erase PLAY - now i got "incorrect version" information , and need a serial to substitute version , then will work.
One pice of it i was able to change to fully Nordic ( almost , since IMEI havn't matched , and firsts OTA didn't worked without substituting) , but this requires serial converter , substituting versions .... Modiied Framework will do whole job...
BTW. I tried to modify a Framework substituting root_uImage , with changed Nordic to Openwrt (without opening and commecting serial converter) with succes.
stich86
https://eko.one.pl/forum/viewtopic.php?pid=271744#p271744
no , Leo-PL prepared a special file ( root_uImage is a combined mtd8 - web ,and mtd9) .
Please test it by you as well. This metod gives some potential risk , that ubi wil not use/prepare whole /overlay. But at least on my worked.
But what about Framework , do you know how it checked the version ? ( and gives comunication ,that it is incorrect ?)
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Each Framwork before it starts to run - check version of router , and either go further , or give an error "invalid version".
That is why you have to use exacl this one ,with fit to the router ( so if our router has TIM you are using "TIM to ..." , if ELISA you are using "ELISA to..." . So i want to find out hat is responsible to checking installed version and somehow baypass it ,that i would be able to start Framework on PLAY...
And yes , could be that anly UPDATE files are different , but maybe someone know ,with exacly file is responsible for this check 
stich86 si ho seguito tutti i consigli, disattivato firewall e antivirus, ho inserito il percorso update, ma appena clicco su start nella riga mi appare “invalid version”… Seguirò anche il consiglio di @Marcin di provare un altro pc/laptop di un amico tra qualche giorno. Secondo me c’è qualche programma che blocca appunto l’esecuzione…
Buongiorno, sono riuscito a cambiare firmware da Tim a Nordic B11 (direttamente), il router risponde al 192.168.1.32 con pass admin.. ma continua a dirmi nessuna SIM inserita o corretta. Ho provato le stesse SIM sullo smartphone e funzionano. Cosa devo fare? Grazie
Try to set APN manually.
Marcin where i find APN setting? Thanks .
Una informazione.. io ho "flashato" da Tim a Nordic b11 (direttamente). Poi mi son connesso col wifi (riattivandolo).. dovevo collegarmi utilizzando il WPS (come nella guida Elisa?) . Il fatto che sia SIM Very che Vodafone non vengano riconosciute affatto , dipende solo dall'APN (come sostiene Marcin?) O ho saltato qualche passaggio cruciale?
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If you know the password to wifi and to web , you can connect how you can. ( WPS connection was to restore existing password ).
APN settings you should find on the main web page in LTE settings
Finall try to Restore Default settings ( put some needle in reset hole for few seconds).
Marcin Ok. I try. Thanks
Ciao nightlynight, il mio consiglio è quello di mettere comunque l'APN della sim che usi, in quanto pur sembrando che lo fa in automatico in realtà poi da più di qualche limitazione.
Ok, i remember that case , that at first time there is a "No SIM". Just leve the router after first time for some time ( let's say 5 min) , then turn it of ,and ( important) also remove the power supply cable from router. Connect it again after 10s ,and should be ok.
