version,backingversion,url
1.50.00,base,https://archive.org/download/WACCA/EXP/1.50.00%20USB/SDFE_1.50.00_20191225123843_0.app
1.50.01,1.50.00,https://archive.org/download/WACCA/EXP/SDFE_1.50.01_20200130145033_1_1.50.00.app
1.50.02,1.50.01,https://archive.org/download/WACCA/EXP/SDFE_1.50.02_20200227161144_2_1.50.01.app
1.50.03,1.50.02,https://archive.org/download/WACCA/EXP/SDFE_1.50.03_20200316131604_3_1.50.02.app
1.50.04,1.50.03,https://archive.org/download/WACCA/EXP/SDFE_1.50.04_20200325170234_4_1.50.03.app
1.50.05,1.50.04,https://archive.org/download/WACCA/EXP/SDFE_1.50.05_20200608155410_5_1.50.04.app
1.50.06,1.50.05,https://archive.org/download/WACCA/EXP/SDFE_1.50.06_20200722145703_6_1.50.05.app