only v3.4.19274 blacklists the reformat tool, all other previous versions can be reformatted easily.
i'm working on updated files
not a clue sorry
3.4.19274 blacklists the reformat tool meaning reformatting is now more difficult. requiring downgrading first.
if i'm not mistaken you have put EU and US maps on, storage isn't big enough for that, use one or the other.
factory reset and then select a language.
Please try updated instructions
Non navi should just be the same but without the VOICE_NAV and MAP so
APPS=5U5T-14G381-AP_1555085337000.TAR.GZ
VOICE=4U5T-14G391-AJ_1552513063000.TAR.GZ
GRACENOTES=4U5T-14G423-AA_123694.tar.gz
ENH_DAB=1U5T-14G658-AD_1544799507000.TAR.GZ
LICENSE=1U5T-14G424-BG_1547214450000.TAR.GZ
I have updated the guide to be a base of 19101 with EU or UK only maps and am also uploading a optional "upgrade to 19274" file and guide