You generally need a full SPI dump in "disaster recovery" scenarios:

Because direct links go stale, here are the trusted sources (search using the exact string in quotes):

. If it is smaller, it is likely a partial update, not a full dump. Common Sources: Technical forums like GSMSandwich Satellite-Receiver-Software , or specialized Telegram groups often host verified dumps. Telegram Messenger 💻 Flashing Guide (Recovery via RS232)