One is cydia impactor, which can sign ipa files with a free developer account and install them directly after signing. This is only suitable for installing your own mobile phone, because you have to connect your own computer to operate the machine. And it only lasts for seven days.

Another way is to go to a treasure and sign it with a corporate certificate, and the cost varies. After signing, you can upload it directly to a website like Dandelion for online installation. The disadvantage is that the company certificate generally countersigns a large number of ipa, which is easy to flash back.

One is to sign an online contract with ipa, such as filling in udid and uploading ipa files, and you can directly install beta man online. This is equivalent to * * * enjoying the developer account, which is relatively simple. The disadvantage is that you must provide a udid.