first i downloaded samfirm tool from official site then i unziped file with winrar or 7-zip then i open samfirmexe file then i write name of my device examble SM-G975F then in region place i write EGY then i choice AUTO then i click check update box then the software information of mobile appear on the tool with the size of software file when i click download the problem always happen with me it about message says that((checking crc32/ file for crc check not found/system.IO.file not found expection file for crccheck not found at samfirm.utility.crccheck(string file.Byte crc)in c:users\ivan\Desktop\samfirm\Utility.cs:line94 at samfirm.form1.b_43_0(objectO.DoworkEventArgs_e)in c:users\ivan\Desktop\samfirm\Form1.csline206)) when i disable checkcrc32 box the other problem appear is about other message says ((error getting response:the remote server returned an error:403 Forbidden
Downlaod finished
Error:File c:User\Yousuf\Documents\SM-G975F_5_20230303120230_ft2ti0fnl3_fac.zip.enc4 doesn't exist))
when i try downloading manual the software information appear with size of file when i click download whether clicking check crc32 box or not the same previous messages appear again exactly
knowing that i installed visual c++ 2008,2010 and NET fremework 3.5