@Yankee63 I just tried that : factory reset, and insert a known functional SIM card, It starts connecting, but the link is too slow to bring up a speed test web site then I try to change the default...

@David-TP Hello David do you see an explanation in the screen captures I sent ? Do I have to re-install the old software ? Thank you

No APN profile shows up automatically And with the recommended APN settings @Yankee63

Ah , ok So : yes, the original firmware was 210812 It was bought 2 years ago, as a backup/spare router (we live in countryside with no landlines). I did extensive tests with IPv4/v6, manual setting...

Hello @David-TP The firmware TL-MR6500v_1.0_1.3.0 Build 20240724 is the one which was proposed through the web interface update section. We had a sluggish 3G connexion at a given moment, but could...

The hardware model is v1.20 (not listed) It had previously the old firmware It does not conenct with my ISP (Orange), and then I tried with my neighbour SIM another ISP (SFR, which works well with...