5g tuoshi 5g cpe

not working upgrade
RG-500UE
Software Version
FROM RG500UEAABR02A01M2G TO RG500UEAABR03A01M4G

Dear @Marktzy
Which port did you select?

Used port 1 …I don’t have any idea to short sprd u2s

i used port 1 not working fail to download

Dear @Marktzy
Actually, I don’t know what port1.
Please follow this to enter emergency download mode.