GL-MT1300能不能刷lede固件?
You mean OpenWRT (LEDE is not developed anymore, it was only a temporary project and was merged back into OpenWRT). If yes, then you can. In the OpenWRT website there are snapshots for MT1300 here:
https://downloads.openwrt.org/snapshots/targets/ramips/mt7621/
里面有和lede的固件吗?适合mt1300这个吗?